JP6502466B2 - gasket - Google Patents

Description

The present application is filed under the title "Gasket and method of manufacturing the same", and is filed on February 25, 2016 and March 10, 2016 respectively in United States Application No. 62 / 300,309 and United States Application No. 15 / 066,314. Claim priority to The entire contents of U.S. Application No. 62 / 300,309 and U.S. Application No. 15 / 066,314 are incorporated by reference into this application.
The present invention relates to a gasket, and more particularly to a metal gasket in the form of wrapping a spiral wound gasket on the upper and lower sides with a pair of metal jackets.

  A gasket is a generic term for a static seal that is fastened to a fixed joint surface such as a pressure vessel, a flange or a joint surface of a machine with a bolt or the like to prevent leakage. Depending on the type of fluid to be operated, pressure, temperature, etc., various types of shapes, materials, etc. are used.

Gaskets have been used simply in materials such as paper and leather at first, but recently they have come to use various forms and materials due to the complicated and severe conditions of use.
That is, the gasket is to be sandwiched between two linked tubes and to prevent fluid from leaking from the gap between the tubes, for example, a valve or a pipe. (4) has a sealing function which is interposed between the flanges which are the connection parts of the tubes for transferring the fluid to prevent the fluid from leaking and to prevent the foreign matter from flowing into the inside of the tube. . That is, at the time of fastening of a flange such as a valve or a pipe, the pressure applied in the axial direction compresses the volume of the gasket, and cuts off the joint between the flanges which are the connection site from the outside.

Gaskets mounted and used in such a plant must maintain a sealed state according to various environments and conditions.
For example, the size and position of the flange on which the gasket is mounted, the bolting process for fastening, etc. must be taken into consideration, especially because the operating conditions of the plant are a series of heating and cooling. Repeatedly flowing high temperature, high pressure fluid in the interior makes it difficult to keep the flatness of the flange 2 which is the connection part of the tube 1 perfectly horizontal, thus the distance of the flange 2 is shown in FIG. As a result, it spreads in a polarized manner (D2> D1).
That is, the gasket mounted on the flange must overcome this deviation and maintain the sealing state, and for this purpose, the yield point in the sealing direction of the gasket must be high and the restoring force must be large.

  However, as shown in FIG. 2a, the gasket may be loaded under high load with gaps such as A, B, C between the flange 2 contact surfaces of the tube, or to the operating flange In the case of re-bolting work, the conventional spiral gasket has a phenomenon that the hoop 5 or the filler 6 gets out of the gap, the gasket is broken, and the fluid leaks. There is a danger of

  The present invention has been made to solve the above-mentioned problems, and a gasket capable of preventing the hoop or filler of the spiral gasket from being detached and the gasket being broken, and the gasket I will try to provide a production method.

  Another object of the present invention is to provide a gasket whose sealing performance is further improved by providing an O-ring member between the spiral gasket and the metal jacket, and a method of manufacturing the same.

  Another object of the present invention is to provide a gasket having C-ring members provided on both sides of the spiral gasket, which can be expanded by external or internal pressure changes to ensure sealing performance, and a method of manufacturing the same.

  Another object of the present invention is to provide a gasket that can prevent the damage of the sealing surface of the gasket through the sealing layer provided on the first jacket and the second jacket, and can further improve the sealing performance, and a method of manufacturing the same.

  The present invention has been made to solve the problems as described above, and by providing an O-ring member between a can profile provided with serrations on the upper and lower surfaces and a jacket made of metal. An object of the present invention is to provide a gasket having a further improved sealing performance and a method of manufacturing the same.

  Another object of the present invention is to provide a gasket in which a spring is provided inside the O-ring member to further improve the sealing performance, and a method of manufacturing the same.

  Another object of the present invention is to provide a gasket having a further improved durability by forming concave or convex ends on one side or both sides of a can profile, and a method of manufacturing the same.

  Another object of the present invention is to provide a gasket that can prevent the damage of the sealing surface of the gasket through the sealing layer provided on the first jacket and the second jacket, and can further improve the sealing performance, and a method of manufacturing the same.

  The present invention was devised to solve the above problems, and by providing an O-ring member on one side of a can profile provided with serrations on the upper and lower surfaces, the structure is simplified. It is an object of the present invention to provide a gasket having high resilience and a method of manufacturing the same.

  Another object of the present invention is to provide a gasket in which a spring is provided inside the O-ring member to further improve the sealing performance, and a method of manufacturing the same.

  Further, by providing a hoop member on the other side of the can profile, it is an object of the present invention to provide a gasket having a further improved sealing performance and a method of manufacturing the same.

  In order to achieve the above object, in the present invention, a spiral wound gasket; a first O-ring member located inside the spiral gasket; a position outside the spiral gasket A second core spring located inside of the first O-ring member; a second core spring located inside the second O-ring member; A first jacket (jacket) having an opening formed on the side thereof, the spiral gasket, the first O-ring member, and the second O-ring member housed therein through the opening; An opening is formed in the spiral gasket, the first O-ring member, the second O-ring member, and the first jacket through the opening. A second jacket for housing therein; a first seal layer formed on the first jacket through an opening of the second jacket; a second formed to cover the first seal layer And a third sealing layer formed on the second jacket opposite to the second sealing layer.

  Further, in the present invention, a spiral gasket; a first O-ring member located inside the spiral gasket; a second O-ring member located outside the spiral gasket; the first O-ring member A first core spring located inside; a second core spring located inside the first O-ring member; an opening is formed on one side, and the spiral gasket and the first O through the opening A first jacket for receiving the ring member and the second O-ring member therein; an inner seal layer formed on the spiral gasket through the opening of the first jacket; Forming the spiral gasket, the first O-ring member, the second O-ring member, the inner seal layer, and the first jacket through the opening; A second jacket; an outer sealing layer formed to cover the first jacket through the opening of the second jacket; and a third formed on the second jacket opposite the outer sealing layer Providing a gasket comprising: a sealing layer;

  Further, in the present invention, a spiral gasket; a first C-ring member positioned inside the spiral gasket; a second C ring member positioned outside the spiral gasket; A first core spring located inside the C ring member; a second core spring located inside the second C ring member; an opening is formed on one side, and the spiral gasket through the opening; A first jacket for accommodating the first O-ring member and the second O-ring member therein; an opening is formed on one side, and the spiral gasket is formed through the opening; A second jacket containing an O-ring member, the second O-ring member, and the first jacket; formed on the first jacket through the opening of the second jacket A first sealing layer; a second sealing layer formed to cover the first sealing layer; and a third sealing layer formed on the second jacket opposite the first sealing layer Providing a gasket characterized by including;

  Further, in the present invention, a spiral gasket; a first C ring member positioned inside the spiral gasket; a second C ring member positioned outside the spiral gasket; the first C ring member A first core spring located inside; a second core spring located inside the second C ring member; an opening is formed on one side, and the spiral gasket and the first O through the opening A first jacket for receiving the ring member and the second O-ring member therein; an inner seal layer formed on the spiral gasket through the opening of the first jacket; Forming the spiral gasket, the first O-ring member, the second O-ring member, the inner seal layer, and the first jacket through the opening; A second jacket; an outer sealing layer formed to cover the first jacket through the opening of the second jacket; and a third formed on the second jacket opposite the outer sealing layer Providing a gasket comprising: a sealing layer;

  Further, the opening of the first C ring member is formed in the inward direction of the gasket, and the opening of the second C ring member is formed in the inward direction of the gasket. I will provide a.

  Further, the opening of the first C ring member is formed in the outer direction of the gasket, and the opening of the second C ring member is formed in the outer direction of the gasket. I will provide a.

  Further, the opening of the first C ring member is formed in the direction facing the contact surface of the flange to which the gasket is attached, and the opening of the second C ring member is attached with the gasket The gasket is characterized in that it is formed in the direction facing the contact surface of the flange.

  Further, the opening of the first C ring member is formed in the inward direction of the gasket, and the opening of the second C ring member is formed in the outward direction of the gasket. I will provide a.

  The first core spring is a leaf coil spring, and the second core spring is a leaf coil spring.

  Also, the spiral gasket is formed by alternately and repeatedly winding a hoop and a filler, and the hoop is formed into a crown shape including two peaks and one valley, and the hoop is formed. The two mountain directions provide a gasket characterized in that it faces the outside of the gasket.

  The filler may be formed of any one or a combination of graphite, ceramic, and mica. That is, the filler can be made of non-asbestos material.

  The first seal layer, the second seal layer and the third seal layer may be made of graphite, mica, polytetrafluoroethylene (PTFE), silver, and atomized stainless steel. Provided is a gasket characterized in that it is formed of any one or a combination thereof.

  Also, the inner seal layer, the outer seal layer and the third seal layer may be any of graphite, mica, polytetrafluoroethylene (PTFE), silver, and atomized stainless steel. Provided is a gasket characterized in that it is formed in one or a combination thereof.

  Further, according to the present invention, the first O-ring member having a core spring and the second O-ring member are mounted inside the first jacket; the first O-ring member and the second Installing a spiral gasket between the O-ring members; a second jacket comprising the first O-ring member, the second O-ring member, the spiral gasket, and the first Forming a first seal layer on the first jacket through the opening of the second jacket; forming a second seal layer over the first seal layer And providing a third seal layer on the second jacket opposite the second seal layer.

  Further, according to the present invention, the first O-ring member having a core spring and the second O-ring member are mounted inside the first jacket; the first O-ring member and the second Attaching a spiral gasket between the O-ring member; forming an inner seal layer on the spiral gasket through the opening of the first jacket; and a second jacket comprising the first jacket Wrapping the O-ring member, the second O-ring member, the spiral gasket, the inner seal layer, and the first jacket; the first jacket through the opening of the second jacket A gasket comprising: forming an outer sealing layer to cover the second sealing layer; and forming a third sealing layer on the second jacket opposite to the outer sealing layer. To provide a work method.

  Further, according to the present invention, the first C ring member having a core spring and the second C ring member are mounted inside the first jacket; the first C ring member and the second C ring member. Attaching the spiral gasket to the C ring member; the second jacket comprises the first C ring member, the second C ring member, the spiral gasket, and the first gasket. Forming a first seal layer on the first jacket through the opening of the second jacket; forming a second seal layer over the first seal layer And providing a third seal layer on the second jacket opposite the second seal layer.

  Further, according to the present invention, the first C ring member having a core spring and the second C ring member are mounted inside the first jacket; the first C ring member and the second C ring member. Attaching a spiral gasket between the first ring and the C ring member; forming an inner seal layer on the spiral gasket through the opening of the first jacket; Wrapping the O-ring member, the second O-ring member, the spiral gasket, the inner seal layer, and the first jacket; the first jacket through the opening of the second jacket A gasket comprising: forming an outer sealing layer to cover the second sealing layer; and forming a third sealing layer on the second jacket opposite to the outer sealing layer. To provide a work method.

  Further, the opening of the first C ring member is formed in the inward direction of the gasket, and the opening of the second C ring member is formed in the inward direction of the gasket. Provide a production method.

  Further, the opening of the first C ring member is formed in the outer direction of the gasket, and the opening of the second C ring member is formed in the outer direction of the gasket. Provide a production method.

  Further, the opening of the first C ring member is formed in a direction facing the contact surface of the flange to which the gasket is attached, and the opening of the second C ring member is a flange to which the gasket is attached A method of manufacturing a gasket is characterized in that it is formed in a direction facing the contact surface of the gasket.

  The present invention also provides a method of manufacturing a gasket, wherein the first core spring is a plate coil spring, and the second core spring is a plate coil spring.

  In addition, the spiral gasket is formed by alternately and repeatedly winding a hoop and a filler, the hoop is formed into a crown shape including two peaks and one valley, and the direction of the two peaks of the hoop is The gasket manufacturing method is characterized in that it faces the outside of the gasket.

  The filler may be formed of any one of graphite, ceramic, and mica, or a combination thereof. That is, the filler can be made of non-asbestos material.

  The first seal layer, the second seal layer and the third seal layer may be any one or a combination of graphite, mica, polytetrafluoroethylene, silver, and stainless steel sprays. A method of manufacturing a gasket is characterized in that

  In addition, the inner seal layer, the outer seal layer, and the third seal layer are formed of any one or a combination of graphite, mica, polytetrafluoroethylene, silver, and stainless steel sprays. The present invention provides a method of manufacturing a gasket.

  In order to achieve the above object, according to the present invention, there is provided a gasket interposed between a tube and a flange which is a connection site between the tubes, the gasket comprising a first jacket a jacket profile provided on the first jacket; an O-ring member provided on the inside of the profile; and a portion of the first jacket, the profile and the jacket. A gasket comprising: a second jacket enclosing the O-ring member.

  Also, the present invention is a gasket interposed between flanges which is a connection site between tubes, the gasket comprising: a first jacket; a can profile provided on the first jacket; A gasket comprising: an O-ring member provided on an outer side of the can profile; and a second jacket enclosing a portion of the first jacket, the can profile and the O-ring member. .

  Also, the present invention is a gasket interposed between flanges which is a connection site between tubes, the gasket comprising: a first jacket; a can profile provided on the first jacket; A gasket comprising: an O-ring member provided on the inside and the outside of the can profile; and a second jacket enclosing a portion of the first jacket, the can profile and the O-ring member; provide.

  Further, a sawtooth is formed on the upper surface of the can profile, and a sawtooth is formed on the lower surface of the can profile.

  Also, the saw tooth is provided with a gasket characterized in that it is formed through serration processing.

Also, the first jacket provides a gasket characterized by being flat.
Also, the second jacket is wider than the first jacket, and the second jacket is subjected to bending processing to form a part of the first jacket, the can profile and the O-ring member. And providing a gasket characterized in that it encloses.

  Further, the present invention provides a gasket characterized in that a spring is provided inside the O-ring member.

  The spring may be a plate coil spring.

  Further, the present invention provides a gasket characterized in that an inner end portion having a concave bend is formed on the can profile so as to be in close contact with the O-ring member.

  Further, the present invention provides a gasket characterized in that the can profile is formed with an outer end portion having an outwardly convex bend which abuts against the first jacket or the second jacket.

  In addition, the first jacket is subjected to a bending process to provide a gasket characterized by wrapping the can profile and the O-ring member.

  Further, the present invention provides a gasket characterized in that an outer end portion having a concave bend is formed on the can profile so as to be in close contact with the O-ring member.

  Further, the present invention provides a gasket characterized in that the can profile is formed with an inner end portion having an inward convex bend which abuts against the first jacket or the second jacket.

  In addition, a sealing layer is formed on the lower surface of the first jacket and the upper surface of the second jacket.

  In addition, the sealing layer is formed of any one or a combination of graphite, mica, polytetrafluoroethylene (PTFE), silver, atomized stainless steel, and ceramic. To provide a gasket characterized by

  In the present invention, the first jacket is prepared, the can profile is seated on the first jacket, and the O-ring member is seated inside the can profile on the first jacket. And a second jacket is bent to wrap a part of the first jacket, the can profile and the O-ring member. Do.

  In the present invention, the first jacket is prepared; the can profile is seated on the first jacket; and the O-ring member is seated on the outside of the can profile on the first jacket. And a second jacket is bent to wrap a part of the first jacket, the can profile and the O-ring member. Do.

  In the present invention, the first jacket is prepared; the can profile is seated on the first jacket; and the O-ring member is seated on the inside and the outside of the can profile; And a step of bending the second jacket to wrap a portion of the first jacket, the can profile and the O-ring member.

  Further, the present invention provides a method of manufacturing a gasket, wherein a sawtooth is formed on the upper surface of the can profile, and a sawtooth is formed on the lower surface of the can profile.

  Also, the present invention provides a gasket manufacturing method characterized in that the saw teeth are formed through serration processing.

  Also, the first jacket provides a method of manufacturing a gasket characterized by being flat.

  Also, the method of manufacturing a gasket is characterized in that the second jacket is wider than the first jacket.

  The present invention also provides a gasket manufacturing method characterized in that a spring is provided inside the O-ring member.

  The present invention also provides a method of manufacturing a gasket, wherein the spring is a plate coil spring.

  Further, the present invention provides a gasket manufacturing method characterized in that an inner end portion having a concave bend is formed on the can profile so as to be in close contact with the O-ring member.

  Further, the present invention provides a gasket manufacturing method characterized in that the can profile is formed with an outer end portion having an outwardly convex bend in contact with the first jacket or the second jacket.

  The first jacket may be bent to wrap the can profile and the O-ring member.

  Further, the present invention provides a gasket manufacturing method characterized in that the can profile is formed with an inner end portion having an inward convex bend which abuts against the first jacket or the second jacket.

  In addition, after the second jacket is subjected to a bending process to wrap a portion of the first jacket, the can profile and the O-ring member, the lower surface of the first jacket and the second jacket Providing a sealing layer on the top surface of the gasket.

  In addition, the sealing layer is formed of any one or a combination of graphite, mica, polytetrafluoroethylene (PTFE), silver, atomized stainless steel, and ceramic. The present invention provides a method of manufacturing a gasket characterized by

  In order to achieve the above object, in the present invention, a gasket is interposed between a tube and a flange that is a connection site between the tubes, and the gasket has a can profile (kamm profile). A gasket comprising: a C-ring end formed inside the can profile; and an O-ring member provided in the C-ring end; .

  Also, the present invention is a gasket interposed between flanges which is a connection site between tubes, wherein the gasket has a can profile; a C ring end formed on the outside of the can profile; And a O-ring member provided within the C-ring end;

  Further, a sawtooth is formed on the upper surface of the can profile, and a sawtooth is formed on the lower surface of the can profile.

  Also, the saw tooth is provided with a gasket characterized in that it is formed through serration processing.

  Further, the present invention provides a gasket characterized in that the upper surface of the can profile is convex and the lower surface of the can profile is convex.

  The gasket may further include a spring provided inside the O-ring member.

  The present invention also provides a gasket characterized in that the spring is a plate coil spring.

  The gasket further includes an outer hoop support end formed on the outside of the can profile.

  Also, the outer hoop supporting end portion is provided with a V-shaped groove for receiving a recess of the hoop.

  The hoop member further includes a hoop member in close contact with the outer hoop support end, wherein the hoop member is formed in the shape of a double (w) consisting of two peaks and one valley, and two peaks of the hoop member. The gasket is characterized in that the direction is directed to the outside of the gasket.

  Also, the present invention provides a gasket characterized in that a filler is filled between the hoops of the hoop member.

  According to the gasket of the preferred embodiment of the present invention and the method of manufacturing the same, the following effects can be obtained.

  1. It has the effect of being able to have higher clamping and restoring forces compared to other gaskets of the same size. Therefore, the sealing performance is improved even at high temperature and high pressure.

  2. Since both upper and lower sides of the spiral gasket are wrapped by a metal-made jacket, it is possible to prevent the phenomenon that the hoop or filler of the spiral gasket is detached even when the gasket is mounted under high load .

  3. The squeezing phenomenon of the gasket can be suppressed by arranging the O-ring members provided with the core spring on both sides of the spiral gasket. Therefore, according to the gasket and the method of manufacturing the same according to the preferred embodiment of the present invention, the restoring force and the sealing performance can be improved.

  4. The C-ring members are disposed on both sides of the spiral gasket, and when fluid flows out from the joint surface of the flange, the C-ring members are expanded to expand the hoop of the spiral gasket, whereby the joint surfaces This has the effect of being able to maintain the seal of the cover more firmly.

  5. Since the step between the jackets that wrap the spiral gasket can be easily eliminated using the seal layer, the pressure applied to the inside of the gasket can be uniformly adjusted.

  6. By further providing a seal layer formed of graphite, mica, ceramic, silver or the like on the upper surface and the lower surface of the gasket, there is an effect that tightness of the joint surface between the gasket and the flange can be maintained more firmly. .

  7. By providing the inner seal layer on the spiral gasket of the gasket, the pressure applied to each portion of the spiral gasket can be equally transmitted.

  8. By using a plate coil spring as a core spring inside the O-ring member or C-ring member, it is possible to ensure the restoring force and disperse the pressure equally to extend the life of the gasket.

  9. The arrangement of the O-ring members on one side, both sides or the center of the can profile has an effect of suppressing the squeezing phenomenon of the gasket. Therefore, according to the gasket and the method of manufacturing the same according to the preferred embodiment of the present invention, the restoring force and the sealing performance can be improved. Further, by mounting a spring inside the O-ring member, there is an effect that a gasket having a further improved restoring force can be provided.

  10. By further providing a seal layer formed of graphite, mica, ceramic, silver or the like on the upper surface and the lower surface of the gasket, there is an effect that tightness of the joint surface between the gasket and the flange can be maintained more firmly. .

  11. By using a plate coil spring as a core spring inside the O-ring member, it is possible to ensure the restoring force and disperse the pressure equally to extend the life of the gasket.

  12. By making the can-profile portion in contact with the O-ring member have a concave bend having a radius of curvature similar to that of the O-ring member, the can profile inside the gasket moves laterally and the O-ring member is broken. It can prevent. Therefore, there is an effect that the durability of the gasket can be further improved.

  13. The structure in which the jackets of the inner and outer parts of the gaskets overlap has the effect of being able to provide a gasket that is stronger against external pressure.

  14. Advantageously, the can profile and the O-ring member of the gasket can be protected through the inner seal layer formed inside the gasket. In addition, the can profile can prevent the jacket from being damaged.

  15. By arranging the O-ring member provided with a spring on one side of the can profile and the hoop member on the other side of the can profile, it is possible to suppress the squeezing phenomenon of the gasket. Therefore, according to the gasket and the method of manufacturing the same according to the preferred embodiment of the present invention, the restoring force and the sealing performance can be improved.

  16. By using a plate coil spring as a core spring inside the O-ring member, it is possible to ensure the restoring force and evenly disperse the pressure, thereby extending the life of the gasket.

  17. By means of the sawtooth members formed on the upper and lower surfaces of the can profile, the load of the fastening bolt can be concentrated on the ridge portion of the sawtooth member even under a low clamping pressure. Therefore, there is an effect that a tight seal can be provided.

  18. Through the C-ring end formed in the can profile, the O-ring member can be easily fixedly attached without an outer jacket. Therefore, such a simple structure has the effect of being able to provide a gasket capable of reducing the production cost. In addition, there is an effect that the resilience of the gasket can be improved.

  19. The gasket can effectively prevent the fluid from flowing out of the pipeline through the hoop member formed on one side of the can profile of the gasket. In addition, by uniformly distributing pressure to the broken portion of the hoop, there is an effect that a further improved restoring force can be provided.

FIG. 1 a is a drawing showing an example of how a flange to which a gasket is applied is expanded in a biased manner. FIG. 2a is a drawing showing an example of how a gap is generated between the contact surfaces of the flanges. FIG. 3a is a drawing showing an example of the appearance of the gasket according to the first embodiment of the present invention. FIG. 4a is an enlarged view of a cross section of the gasket according to the first embodiment of the present invention as described above. FIG. 5a is a drawing showing an example of the cross section of the gasket according to the second embodiment of the present invention. FIG. 6a is a drawing showing an example of the cross section of the gasket according to the third embodiment of the present invention. FIG. 7a is a drawing showing an example of the cross section of the gasket according to the fourth embodiment of the present invention. FIG. 8a is a drawing showing an example of the cross section of the gasket according to the fifth embodiment of the present invention. FIG. 9a is a drawing showing an example of the cross section of the gasket according to the sixth embodiment of the present invention. FIG. 10a is a drawing showing an example of the cross section of the gasket according to the seventh embodiment of the present invention. FIG. 11a is a drawing showing an example of the cross section of the gasket according to the eighth embodiment of the present invention. FIG. 12a is a drawing showing an example of the cross section of the gasket according to the ninth embodiment of the present invention. FIG. 13a is a drawing showing an example of the cross section of the gasket according to the tenth embodiment of the present invention. FIG. 14a is a drawing showing an example of the cross section of the gasket according to the eleventh embodiment of the present invention. FIG. 15a is a drawing showing an example of the cross section of the gasket according to the twelfth embodiment of the present invention. FIG. 16a is a drawing showing an example of a core spring employed in each embodiment of the present invention. FIG. 17a is a drawing showing an example of manufacturing a core spring adopted in each embodiment of the present invention. FIG. 18a is a drawing showing an example of the cross section of the gasket according to the thirteenth embodiment of the present invention. FIG. 19a is a drawing showing an example of the cross section of the gasket according to the fourteenth embodiment of the present invention. FIG. 20a is a drawing showing an example of the cross section of the gasket according to the fifteenth embodiment of the present invention. FIG. 21a is a drawing showing an example of the cross section of the gasket according to the sixteenth embodiment of the present invention. FIG. 22a is a drawing showing an example of the cross section of the gasket according to the seventeenth embodiment of the present invention. FIG. 23a is a drawing showing an example of the cross section of the gasket according to the eighteenth embodiment of the present invention. FIG. 24a is a drawing showing an example of the cross section of the gasket according to the nineteenth embodiment of the present invention. FIG. 25a is a drawing showing an example of the cross section of the gasket according to the twentieth embodiment of the present invention. FIG. 26a is a drawing showing an example of the cross section of the gasket according to the twenty first embodiment of the present invention. FIG. 27a is a drawing showing an example of the cross section of the gasket according to the twenty second embodiment of the present invention. FIG. 28a is a drawing showing an example of the cross section of the gasket according to the twenty-third embodiment of the present invention. FIG. 29a is a drawing showing an example of the cross section of the gasket according to the twenty fourth embodiment of the present invention. FIG. 30a is a drawing showing an example of the cross section of the gasket according to the twenty-fifth embodiment of the present invention. FIG. 31a is a drawing showing an example of the cross section of the gasket according to the twenty-sixth embodiment of the present invention. FIG. 32a is a drawing showing an example of the cross section of the gasket according to the twenty-seventh embodiment of the present invention. FIG. 33 a is a drawing showing an example of a cross section of a gasket according to a twenty-eighth embodiment of the present invention. FIG. 34a is a drawing showing an example of the cross section of the gasket according to the twenty-ninth embodiment of the present invention. FIG. 35a is a drawing showing an example of the cross section of the gasket according to the thirtieth embodiment of the present invention. FIG. 1 b is a drawing showing an example of how a flange to which a gasket is applied is expanded in a biased manner. FIG. 2 b is a drawing showing an example of how a gap is generated between the contact surfaces of the flanges. FIG. 3b is a view showing a modified embodiment of the gasket according to the first embodiment of the present invention. FIG. 4b is a drawing showing an example of the appearance of the gasket according to the first embodiment of the present invention. FIG. 5b is a view showing a modified embodiment of the gasket according to the second embodiment of the present invention. FIG. 6b is a view showing a modified embodiment of the gasket according to the second embodiment of the present invention. FIG. 7b is a view showing a modified embodiment of the gasket according to the second embodiment of the present invention. FIG. 8b is a drawing showing an example of the appearance of the gasket according to the second embodiment of the present invention. FIG. 9b is a drawing showing an example of the appearance of the gasket according to the third embodiment of the present invention. FIG. 10b is a view showing a modified embodiment of the gasket according to the third embodiment of the present invention. FIG. 11 b is a view showing a modified embodiment of the gasket according to the third embodiment of the present invention. FIG. 12b is a view showing a modified embodiment of the gasket according to the third embodiment of the present invention. FIG. 13 b is a drawing showing an example of the appearance of a gasket according to a fourth embodiment of the present invention. FIG. 14 b is a view showing a modified embodiment of the gasket according to the fourth embodiment of the present invention. FIG. 15b is a view showing a gasket according to a fifth embodiment of the present invention and a modified form thereof. FIG. 16b is a view showing a modified embodiment of the gasket according to the fifth embodiment of the present invention. FIG. 17b is a drawing showing an example of the appearance of the gasket according to the sixth embodiment of the present invention. FIG. 18b is a view showing a modified embodiment of the gasket according to the sixth embodiment of the present invention. FIG. 19b is a drawing showing an example of the appearance of the gasket according to the seventh embodiment of the present invention. FIG. 20b is a view showing a modified embodiment of the gasket according to the seventh embodiment of the present invention. FIG. 21 b is a drawing showing an example of the appearance of the gasket according to the seventh embodiment of the present invention. FIG. 22 b is a drawing showing an example of the appearance of the gasket according to the eighth embodiment of the present invention. FIG. 23b is a view showing a modified embodiment of the gasket according to the eighth embodiment of the present invention. FIG. 24 b is a drawing showing an example of the appearance of the gasket according to the ninth embodiment of the present invention. FIG. 25b is a view showing a modified embodiment of the gasket according to the ninth embodiment of the present invention. FIG. 26b is a view showing a modified embodiment of the gasket according to the ninth embodiment of the present invention. FIG. 27b is a view showing a modified embodiment of the gasket according to the ninth embodiment of the present invention. FIG. 28b is a drawing showing an example of the appearance of the gasket according to the tenth embodiment of the present invention. FIG. 29b is a view showing a modified embodiment of the gasket according to the tenth embodiment of the present invention. FIG. 30b is a view showing a modified embodiment of the gasket according to the tenth embodiment of the present invention. FIG. 31 b is a view showing a modified embodiment of the gasket according to the tenth embodiment of the present invention. FIG. 32b is a drawing showing an example of the appearance of the gasket according to the eleventh embodiment of the present invention. FIG. 33 b is a view showing a modified embodiment of the gasket according to the eleventh embodiment of the present invention. FIG. 34 b is a view showing an example of a gasket according to a twelfth embodiment of the present invention. FIG. 35b is a view showing a modified embodiment of the gasket according to the twelfth embodiment of the present invention. FIG. 36b is a drawing showing an example of the gasket according to the thirteenth embodiment of the present invention. FIG. 37b is a view showing a modified embodiment of the gasket according to the thirteenth embodiment of the present invention. FIG. 38b is a drawing showing an example of the gasket according to the fourteenth embodiment of the present invention. FIG. 39b is a view showing a modified embodiment of the gasket according to the fourteenth embodiment of the present invention. FIG. 40 b is a drawing showing an example of the gasket according to the fourteenth embodiment of the present invention. FIG. 41b is a drawing showing an example of the gasket according to the fifteenth embodiment of the present invention. FIG. 42b is a view showing a modified embodiment of the gasket according to the fifteenth embodiment of the present invention. FIG. 43b is a drawing showing an example of the gasket according to the sixteenth embodiment of the present invention. FIG. 44b is a view showing a modified embodiment of the gasket according to the sixteenth embodiment of the present invention. FIG. 45b is a view showing a modified embodiment of the gasket according to the sixteenth embodiment of the present invention. FIG. 46b is a view showing a modified embodiment of the gasket according to the sixteenth embodiment of the present invention. FIG. 47b is a drawing showing an example of the gasket according to the seventeenth embodiment of the present invention. FIG. 48b is a view showing a modified embodiment of the gasket according to the seventeenth embodiment of the present invention. FIG. 49b is a view showing a modified embodiment of the gasket according to the seventeenth embodiment of the present invention. FIG. 50b is a view showing a modified embodiment of the gasket according to the seventeenth embodiment of the present invention. FIG. 51 b is a view showing an example of a gasket according to an eighteenth embodiment of the present invention. FIG. 52b is a view showing a modified embodiment of the gasket according to the eighteenth embodiment of the present invention. FIG. 53b is a drawing showing an example of the gasket according to the nineteenth embodiment of the present invention. FIG. 54b is a view showing a modified embodiment of the gasket according to the nineteenth embodiment of the present invention. FIG. 55b is a drawing showing an example of the gasket according to the nineteenth embodiment of the present invention. FIG. 56b is a view showing a modified embodiment of the gasket according to the twentieth embodiment of the present invention. FIG. 57b is a drawing showing an example of the gasket according to the twenty first embodiment of the present invention. FIG. 58b is a view showing a modified form of the gasket according to the twenty first embodiment of the present invention. FIG. 59b is a drawing showing an example of the gasket according to the twenty first embodiment of the present invention. FIG. 60b is a drawing showing an example of the gasket according to the twenty-second embodiment of the present invention. FIG. 61 b is a view showing a modified embodiment of the gasket according to the twenty-second embodiment of the present invention. FIG. 62b is a drawing showing an example of the gasket according to the twenty-third embodiment of the present invention. FIG. 63b is a view showing a modified embodiment of the gasket according to the twenty-third embodiment of the present invention. FIG. 64b is a view showing a modified embodiment of the gasket according to the twenty-third embodiment of the present invention. FIG. 65b is a view showing a modified embodiment of the gasket according to the twenty-third embodiment of the present invention. FIG. 66b is a drawing showing an example of the gasket according to the twenty-fourth embodiment of the present invention. FIG. 67b is a view showing a modified form of the gasket according to the twenty-fourth embodiment of the present invention. FIG. 68b is a view showing a modified embodiment of the gasket according to the twenty-fourth embodiment of the present invention. FIG. 69b is a view showing a modified form of the gasket according to the twenty-fourth embodiment of the present invention. FIG. 70b is a drawing showing an example of the gasket according to the twenty-fifth embodiment of the present invention. FIG. 71 b is a view showing a modified embodiment of the gasket according to the twenty-fifth embodiment of the present invention. FIG. 72b is a drawing showing an example of the gasket according to the twenty-sixth embodiment of the present invention. FIG. 73b is a drawing showing an example of the gasket according to the twenty-seventh embodiment of the present invention. FIG. 74b is a drawing showing an example of the gasket according to the twenty-eighth embodiment of the present invention. FIG. 75b is a drawing showing an example of the gasket according to the twenty-ninth embodiment of the present invention. FIG. 76b is a drawing showing an example of the gasket according to the thirtieth embodiment of the present invention. FIG. 77b is a drawing showing an example of the gasket according to the thirty first embodiment of the present invention. FIG. 78b shows an example of a gasket according to a thirty-second embodiment of the present invention. FIG. 79b is a drawing showing an example of the gasket according to the thirty third embodiment of the present invention. FIG. 80b is a view showing an example of a gasket according to a thirty-fourth embodiment of the present invention. FIG. 81b is a drawing showing an example of the gasket according to the thirty-fifth embodiment of the present invention. FIG. 1 c is a drawing showing an example of how a flange to which a gasket is applied is expanded in a biased manner. FIG. 2c is a drawing showing an example of the appearance of the gasket according to the first embodiment of the present invention. FIG. 3c is a view showing an example of a modified embodiment of the gasket according to the first embodiment of the present invention. FIG. 4 c is a drawing showing an example of the appearance of the gasket according to the second embodiment of the present invention. FIG. 5 c is a view showing a modified embodiment of the gasket according to the second embodiment of the present invention. FIG. 6 c is a view showing an example of a gasket according to a third embodiment of the present invention. FIG. 7c is a view showing a modified embodiment of the gasket according to the third embodiment of the present invention. FIG. 8c is a view showing an example of a gasket according to a fourth embodiment of the present invention. FIG. 9c is a view showing a modification of the gasket according to the fourth embodiment of the present invention. FIG. 10 c is a view showing an example of a gasket according to a fifth embodiment of the present invention. FIG. 11 c is a view showing a modification of the gasket according to the fifth embodiment of the present invention. FIG. 12 c is a view showing an example of a gasket according to a sixth embodiment of the present invention. FIG. 13 c is a view showing a modification of the gasket according to the sixth embodiment of the present invention. FIG. 14 c is a view showing an example of a gasket according to a seventh embodiment of the present invention. FIG. 15c is a drawing showing a modification of the gasket according to the seventh embodiment of the present invention. FIG. 16 c is a view showing an example of a gasket according to an eighth embodiment of the present invention. FIG. 17c is a drawing showing a modification of the gasket according to the eighth embodiment of the present invention. FIG. 18 c is a view showing an example of a gasket according to a ninth embodiment of the present invention. FIG. 19c is a drawing showing a modification of the gasket according to the ninth embodiment of the present invention. FIG. 20c is a drawing showing an example of the gasket according to the tenth embodiment of the present invention. FIG. 21 c is a view showing a modified example of the gasket according to the tenth embodiment of the present invention. 22c is a drawing showing an example of the gasket according to the eleventh embodiment of the present invention. FIG. FIG. 23 c is a view showing a modified example of the gasket according to the eleventh embodiment of the present invention. FIG. 24 c is a view showing an example of a gasket according to a twelfth embodiment of the present invention. FIG. 25 c is a view showing a modified example of the gasket according to the twelfth embodiment of the present invention. FIG. 26 c shows an example of a gasket according to a thirteenth embodiment of the present invention. FIG. 27c is a drawing showing a modification of the gasket according to the thirteenth embodiment of the present invention. FIG. 28 c is a drawing showing an example of the gasket according to the fourteenth embodiment of the present invention. FIG. 29c is a drawing showing a modification of the gasket according to the fourteenth embodiment of the present invention. FIG. 30 c is a view showing an example of a gasket according to a fifteenth embodiment of the present invention. FIG. 31 c is a drawing showing a modified example of the gasket according to the fifteenth embodiment of the present invention. FIG. 32c is a drawing showing an example of the gasket according to the fifteenth embodiment of the present invention. FIG. 33 c is a view showing a modified example of the gasket according to the fifteenth embodiment of the present invention. FIG. 34 c is a drawing showing an example of the gasket according to the sixteenth embodiment of the present invention. FIG. 35 c is a drawing showing a modification of the gasket according to the sixteenth embodiment of the present invention. FIG. 36c is a drawing showing an example of the gasket according to the seventeenth embodiment of the present invention. FIG. 37c is a drawing showing a modification of the gasket according to the seventeenth embodiment of the present invention. FIG. 38c is a drawing showing an example of the gasket according to the eighteenth embodiment of the present invention. FIG. 39c is a drawing showing a modification of the gasket according to the eighteenth embodiment of the present invention. FIG. 40c is a drawing showing an example of the gasket according to the nineteenth embodiment of the present invention. FIG. 41c is a drawing showing a modification of the gasket according to the nineteenth embodiment of the present invention. FIG. 42c is a drawing showing an example of the gasket according to the twentieth embodiment of the present invention. FIG. 43c is a drawing showing a modification of the gasket according to the twentieth embodiment of the present invention. FIG. 44c is a drawing showing an example of the gasket according to the twenty first embodiment of the present invention. FIG. 45 c is a drawing showing a modified example of the gasket according to the twenty first embodiment of the present invention. FIG. 46c is a drawing showing an example of the gasket according to the twenty-second embodiment of the present invention. FIG. 47c is a drawing showing a modification of the gasket according to the twenty-second embodiment of the present invention. FIG. 48c is a drawing showing an example of the gasket according to the twenty-third embodiment of the present invention. FIG. 49c is a drawing showing a modification of the gasket according to the twenty-third embodiment of the present invention. FIG. 1d is a drawing showing an example of a gasket according to a twenty-fourth embodiment of the present invention. FIG. 2d is a view showing a modification of the gasket according to the twenty-fourth embodiment of the present invention. FIG. 3d is a drawing showing an example of the gasket according to the twenty-fifth embodiment of the present invention. FIG. 4 d is a view showing a modification of the gasket according to the twenty-fifth embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. However, this is not intended to limit the present invention to a particular disclosed form, but should be understood to include all modifications, equivalents, and alternatives falling within the spirit and scope of the present invention.

FIG. 3a is a drawing showing the appearance of the gasket according to the first embodiment of the present invention.
The gasket according to an embodiment of the present invention may have a ring shape as a whole as shown in FIG. 3a, but is not limited thereto, and may have an oval shape, an oblong shape, a diamond shape, as needed. Etc.) can be various shapes.
The gasket according to the first embodiment of the present invention includes a spiral gasket 200, an O-ring member 110, a core spring 120, a first jacket 320, a second jacket 310, and a first seal layer 421. A second seal layer 422 and a third seal layer 410 can be included.

O-ring members 110 may be positioned on the inside and the outside of the spiral gasket 200. Also, among the two O-ring members 110, the O-ring member 110 at a portion close to the flow passage of the pipe flange can be referred to as a first O-ring member, and the O-ring located outside the spiral gasket 200 The member 110 can be referred to as a second O-ring member. A core spring 120 can be provided inside the O-ring member 110.
Such a spiral gasket 200, the first O-ring member and the second O-ring member can be housed inside the first jacket 320, and the spiral gasket 200 includes the first jacket 320, The first O-ring member and the second O-ring member can be housed inside the second jacket 310.
Also, the first seal layer 421 can be formed on the first jacket 320 housed in the second jacket 310, and the second seal layer 422 is formed on the first seal layer 421. can do. Additionally, a third seal layer 410 can be formed on the second jacket 310 opposite the second seal layer 422.

FIG. 4a is an enlarged view of a cross section of the gasket according to the first embodiment of the present invention described above.
The spiral gasket 200 according to the first embodiment of the present invention can be produced by alternately and repeatedly winding the hoop 210 and the filler 220 in a spiral. However, instead of always overlapping the hoops 210 and the fillers 220 in sequence, the outer or inner portion of the spiral gasket 200 is wound in various manners in the direction of further winding the hoops 210 to further strengthen the reinforcing force. It can be generated by turning. That is, more hoops 210 may be wound around the outer or inner portion of the spiral gasket 200 to prevent the filler 220 from flowing out.

The hoop 210 of the spiral gasket 200 used in the present invention can be made with a zigzag shaped cross section and a metal strip with elasticity, as can be seen from FIG. 4a, two peaks and one valley. It can be manufactured to have a "W" shape. Also, the two ridges of the hoop 210 can be formed to face the outside of the gasket so that when fluid flows out of the flange's duct, the hoop 210 can be spread by the pressure of the fluid to prevent additional outflow. .
Further, the hoop 210 of the spiral gasket 200 of the gasket according to the first embodiment of the present invention can be formed in a “W” shape with three fold portions formed. Since such a “W” -shaped hoop has three folds, the pressure applied from the outside of the gasket is uniformly dispersed and applied to each fold so that the hoop 210 is exposed to the external pressure. It has the effect of preventing it from yielding and losing its resilience.
The filler 220 of the spiral wound gasket 200 of the gasket of the present invention can be composed of, but not limited to, any one of graphite, ceramic and mica or a combination thereof . That is, non-asbestos materials can be used.

  The O-ring members 110 provided on the inner and outer sides of the spiral gasket 200 of the gasket according to the first embodiment of the present invention are formed of a metal material and perform the role of preventing radial deformation of the spiral gasket 200. Can. Since such an O-ring member 110 can be made of metal, it is also referred to as a metal tube O-ring. In addition, the core spring 120 provided inside the O-ring member 110 may play a role of reinforcing the restoring force of the O-ring member 110.

The first jacket 320 of the first embodiment of the present invention can be made of metal, and accommodates the spiral gasket 200, the first O-ring member, and the second O-ring member inside through the opening. be able to. Also, the second jacket 310 is through the opening opposite the first jacket 320 through the spiral gasket 200, the first O-ring member, the second O-ring member, and the first jacket 320. Can be housed inside.
That is, since the gasket according to the first embodiment of the present invention wraps the spiral gasket 200 with the first jacket 320 and the second jacket 310, the hoop 210 and the filler 220 of the spiral gasket 200 are discharged to the outside. Can be prevented. In addition, the O-ring member 110 provided inside the first jacket 320 and the second jacket 310 can improve the restoring force of the gasket.

A first seal layer 421 may be formed on the first jacket 320 exposed through the opening of the second jacket 310 of the gasket according to the first embodiment of the present invention. The first seal layer 421 is formed to a thickness of the first jacket 320, and has an effect of filling the step formed by the second jacket 310 wrapping the first jacket 320. . A second seal layer 422 may be formed on the first seal layer 421 so as to completely cover the first seal layer 421, and the second seal layer 422 may be opposite to the second seal layer 422. A third seal layer 410 can be formed on the second jacket 310. In addition, the internal density of the first seal layer 421 can be made denser than that of the second seal layer 422. That is, even in the case of the same graphite or the like, the first seal layer 421 can be formed harder and denser than the second seal layer 422.
Therefore, according to the gasket of the first embodiment of the present invention, the step formed between the first jacket 320 and the second jacket 310 is easily eliminated by the first seal layer 421 made of graphite or the like. Because the pressure applied to the inside of the gasket can be equalized. Further, the second seal layer 422 and the third seal layer 410 have an effect of maintaining the upper and lower surfaces of the gasket smoothly at the same height to further improve the adhesion effect with the joint surface of the flange.

FIG. 5a is a cross-sectional view of a gasket according to a second embodiment of the present invention.
In the gasket according to the second embodiment of the present invention, the spiral gasket 200, the first O-ring member, and the second O-ring member are accommodated in the first jacket 320 through the opening of the first jacket 320. Can be
Also, an inner seal layer 411 may be formed on the spiral gasket 200 housed inside the first jacket 320. The inner seal layer 411 may be formed of a graphite material, but is not limited thereto. Preferably, the inner seal layer 411 may be formed of a material made of any one or a combination of graphite, mica, and ceramic.

The second jacket 310 of the gasket according to the second embodiment of the present invention is formed by wrapping the spiral gasket 200, the first O-ring member, the second O-ring member, and the inner seal layer 411. Can be
In this process, the inner seal layer 411 in the second jacket 310 plays a role to help the second jacket 310 to wrap the first jacket 320 smoothly, and when employed in a flange, a spiral gasket A role of evenly transmitting the pressure of each portion applied to 200 may be performed.
An outer seal layer 420 can be formed on the surface of the first jacket 320 exposed through the opening of the second jacket 310, and the outer seal layer 420 covers the entire surface of the exposed first jacket. Can be formed as. Also, a third seal layer 410 can be formed on the second jacket 310 opposite the outer seal layer 420.
Therefore, finally, the upper surface and the lower surface of the gasket can be formed uniformly at the same height and on both sides, thereby reducing the risk of stress being concentrated on a certain part and the gasket being broken. effective. In addition, since the outer seal layer 420 made of graphite or the like can be applied on the first jacket 320 in a single step, the manufacturing process can be simplified and the production cost can be reduced.

FIG. 6a is a cross-sectional view of a gasket according to a third embodiment of the present invention.
The gasket according to the third embodiment of the present invention can be manufactured in the same manner as the gasket according to the first embodiment, except that the O-ring member 110 can be manufactured by changing it to the C-ring member 111.
In the C-ring member 111 of the gasket according to the third embodiment of the present invention, an opening is formed on one side of the O-ring member 110, and the cross section has a "C" shape. The gasket according to the present invention can be formed in a direction in which the opening of the C ring member 111 faces the inside of the gasket.
Therefore, when the fluid flows out from the flow path of the tube flange, the opening of the C ring member 111 is expanded, and the fluid can be prevented from additionally flowing out to the outside. There is an effect that it is possible to prevent the spiral gasket 200 from being released in the radial direction of the gasket.

FIG. 7a is a cross-sectional view of a gasket according to a fourth embodiment of the present invention.
The gasket according to the fourth embodiment of the present invention can be manufactured by replacing the O-ring member 110 of the gasket according to the second embodiment with a C-ring member 111.
Similarly to the gasket according to the third embodiment described above, the fluid according to the fourth embodiment of the present invention flows out of the flow path of the flange by the C ring member 111 provided on the inside and the outside of the spiral gasket 200. It is effective to prevent the hoop and the filler of the spiral gasket 200 from being separated in the radial direction.

In the gasket according to the fourth embodiment of the present invention, the inner seal layer 411 can be formed on the spiral gasket 200 housed inside the first jacket. And a second jacket 310 covers the second jacket 310, and the spiral gasket 200, the first C ring member, the second C ring member, and the inner seal layer 411 are accommodated in the second jacket 310. it can.
Therefore, since the spiral gasket 200 can be closely spaced without being separated from the second jacket 310 by the inner seal layer 411, the pressure applied to the spiral gasket 200 can be evenly distributed.
The surface of the first jacket 320 exposed to the outside through the opening of the second jacket 310 can be completely covered by the outer sealing layer 420. A third seal layer 410 can be formed on the second jacket 310 opposite to the outer seal layer 420.
Therefore, according to the gasket according to the fourth embodiment of the present invention, the same pressure can be applied to each part of the gasket from the joint surface of both flanges, so that the gasket can be prevented from being damaged to the maximum extent. There is.

FIG. 8a is a cross-sectional view of a gasket according to a fifth embodiment of the present invention.
The C-ring member 111 of the gasket according to the fifth embodiment of the present invention is characterized in that, in the gasket according to the third embodiment, the direction is not the inward direction but the outward direction of the gasket.
In the gasket according to the fifth embodiment of the present invention, when the non-ideal pressure is applied from the outside of the flange by the C ring member 111 facing the outside direction of the gasket, the C ring member 111 is expanded and the external pressure is applied. Is effective in preventing the flange from affecting the pipeline. In addition, when fluid flows into the inside of the gasket, the opening of the C ring member 111 is expanded together with the spiral gasket 200 inside, and the gasket is more closely attached to the joint surface of the flange, and the sealing effect is improved. There is.

FIG. 9a is a cross-sectional view of a gasket according to a sixth embodiment of the present invention.
The gasket according to the sixth embodiment of the present invention is characterized in that the gasket according to the fourth embodiment is manufactured by changing the direction of the C ring member 111 so as to face the outer direction of the gasket.
The gasket according to the sixth embodiment of the present invention is also the second C-ring member located on the outside of the spiral gasket 200 when pressure is applied non-ideally from the outside of the flange, similarly to the gasket of the fifth embodiment. Can be prevented from expanding and affecting the internal channel of the flange.
When fluid flows into the inside of the first jacket 320 of the gasket, both the internal spiral gasket 200 and the C-ring member 111 are expanded so that the gasket is further closely adhered to the joint surface of the flange. It has the effect of

FIGS. 10a and 11a are cross-sectional views of the gaskets according to the seventh and eighth embodiments of the present invention.
The gasket according to the seventh embodiment and the eighth embodiment of the present invention can be formed in the direction in which the opening of the C ring member 111 faces the top.
Thus, in the gaskets according to the seventh embodiment and the eighth embodiment of the present invention, the hoop 210 of the spiral gasket 200 is pushed out more strongly from both sides when the opening of the C ring member 111 faces the top. Can.
More specifically, when fluid is drained from the conduit and flows into the inside of the first jacket 320 and the second jacket 310 of the gasket, the C-ring member 111 of the gasket is expanded to the left and right. That is, the first C ring member located inside the spiral gasket 200 and the second C ring member located outside the spiral gasket 200 are expanded to push the spiral gasket 200 from both sides. As a result, the hoop 210 of the spiral gasket 200 is expanded and is further in close contact with the contact surface of the flange.
Therefore, according to the gaskets according to the seventh and eighth embodiments of the present invention, the sealing effect of the joint surface of the flanged conduit can be further enhanced.

12a and 13a are cross-sectional views of the gaskets according to the ninth and tenth embodiments of the present invention.
The ninth and tenth embodiments of the present invention are shown in the drawings so that the C-ring member 111 of the gasket faces the lower part of the flange, and the seventh and eighth embodiments of the present invention. Although the gaskets are considered to be gaskets different from the gaskets, in fact, the gaskets of the ninth embodiment and the tenth embodiment have symmetrical structures in the seventh embodiment and the eighth embodiment which are turned upside down and which have the same structure. It is.
Therefore, the gaskets of the ninth and tenth embodiments are not different gaskets from the gaskets of the seventh and eighth embodiments, and similarly, when fluid flows into the gasket, the C ring member 111 is Since the expansion is performed so that the spiral gasket 200 is simultaneously extruded from the inside and the outside to expand the hoop, the sealing effect of the joint surface of the flange is further enhanced.

14a and 15a are cross-sectional views of the gaskets according to the eleventh and twelfth embodiments of the present invention.
The gaskets according to the eleventh embodiment and the twelfth embodiment of the present invention are the second gaskets of the C ring member 111 positioned outside the spiral gasket 200 in the gaskets according to the third embodiment and the fourth embodiment, respectively. It is characterized in that the direction of the opening of the C ring member is directed outward.
In the gaskets according to the eleventh and twelfth embodiments of the present invention, the opening of the first C ring member located inside the spiral gasket 200 faces the inside of the gasket, and the outside of the spiral gasket 200 is The second C-ring member located at is directed to the outside of the gasket, whereby the fluid discharged from the flange conduit is expanded to seal the joint surface and flow in from the outside of the flange. The fluid has the effect that the second C-ring member can be expanded to tightly seal the mating surface.

FIG. 16a is a drawing showing an example of a core spring employed in each embodiment of the present invention.
The core spring 120 employed inside the O-ring member 110 or the C-ring member 111 of each embodiment of the present invention is a spring manufactured in the form of a plate coil spring 121 formed by winding a long plate. Can be.
Generally, the coil spring 122 can be manufactured by winding an elongated metal wire in the coil direction, as can be seen from FIG. 17a.
However, when inserting a general coil spring 122 into the O ring member 110 or the C ring member 111, as shown in the enlarged view in FIG. 17a, at the contact site between the coil spring 122 and the O ring member 110 or C ring member 111. Some "S" can only be a very narrow area. That is, since the contact surface between the coil spring 122 and the O ring member 110 or C ring member 111 inserted to strengthen the restoring force of the O ring member 110 or C ring member 111 is small, pressure is applied from the outside. In this case, a large pressure may be applied to the narrow area as it is, and the O-ring member 110 or the C-ring member 111 may be easily broken.

Therefore, as the core spring 120 according to each embodiment of the present invention, a plate coil spring 121 formed by winding a long plate can be used.
When the core spring 120 is replaced by the plate coil spring 121, as can be seen from FIG. 16a, "S" which is a contact site between the plate coil spring 121 and the O ring member 110 or the C ring member 111 can be widely maintained. . That is, since the contact area of a very large area can be maintained compared with "S" of FIG. 17a, even if pressure is applied to O ring member 110 and C ring member 111, the pressure is uniformly dispersed. Can.
Accordingly, the possibility of breakage of the O-ring member 110 and the C-ring member 111 can be further reduced.

FIG. 18a is a cross-sectional view of a gasket according to a thirteenth embodiment of the present invention.
The gasket according to the thirteenth embodiment of the present invention is characterized in that, in the gasket according to the first embodiment, the hoop 210 of the spiral gasket 200 is formed in a "V" shape.
The hoop 210 formed in the “V” shape of the gasket according to the thirteenth embodiment of the present invention can be manufactured in one folding step. That is, although the manufacturing process is somewhat complicated in the case of the above-mentioned "W" -shaped hoop 210 because three folding steps are required, the gasket according to the thirteenth embodiment of the present invention is a "V" -shaped hoop Since only one folding step is required to make 210, the production cost can be reduced.
Therefore, in the case of the “V” -shaped hoop 210, the pressure is concentrated to a part where there is a break, and thus there is a disadvantage that the external pressure is more likely to yield than the “W” -shaped hoop 210, but the manufacturing process is simple. As a result, it is possible to provide the gasket employed at the joint surface of the relatively low pressure flange tube at a lower cost.

FIG. 19a is a cross-sectional view of a gasket according to a fourteenth embodiment of the present invention.
The gasket according to the fourteenth embodiment of the present invention is characterized in that, in the spiral gasket 200 of the gasket according to the first embodiment, the shape of the hoop 210 is manufactured in a plate shape having a projecting portion.
In the fourteenth embodiment of the present invention, the protrusion of the hoop 210 of the spiral gasket 200 can be directed to the outside of the gasket.
And, when pressure is applied from the outside of the flange, the protrusion and the second O-ring member can be squeezed by such a protrusion to expand the hoop of the gasket. It is noted that the opposite first O-ring member can be squeezed with the indent of the hoop. Therefore, when pressure is applied from the outside or the inside of the gasket as a whole, the hoop of the spiral gasket 200 spreads, so that it is possible to prevent the outflow of the fluid in the flange channel. Also, since the gasket according to the fourteenth embodiment of the present invention has three folds unlike the "V" shaped hoop 210, an additional effect that the pressure is somewhat dispersed can also be achieved.

FIG. 20a is a cross-sectional view of a gasket according to a fifteenth embodiment of the present invention.
The gasket according to the fifteenth embodiment of the present invention can be the gasket according to the first embodiment in which the hoop 210 of the spiral gasket 200 is a mixture of "V" shape and "W" shape. .
More specifically, the hoop 210 located outside the spiral gasket 200 of the gasket according to the fourteenth embodiment of the present invention can be formed in a "V" shape, and the hoop 210 located inside can be "W". It can be formed in a letter shape.
As mentioned above, the "W" shaped hoop 210 can disperse the pressure applied to the hoop 210 by the three folds, and the hoop 210 will yield under high pressure and lose its restoring force. There is an effect that can be prevented. Also, since the “V” -shaped hoop 210 has only one break, the pressure is concentrated at the broken part and is more easily surrendered than the “W” -shaped hoop, but the effect is that the manufacturing process is simple. is there.
Therefore, in the gasket according to the fifteenth embodiment of the present invention, the "V" -shaped hoop 210 is located on the outside of the gasket and the "W" -shaped hoop 210 is located on the inside of the gasket to provide stronger pressure. The “W” -shaped hoop is in charge of the internal restoring force applied, and the “V” -shaped hoop is in charge of the outer side, and it has the additional effect of lowering the manufacturing cost while improving the gasket restoring force. Can.

FIG. 21a is a cross sectional view of a gasket according to a sixteenth embodiment of the present invention.
The gasket according to the sixteenth embodiment of the present invention is characterized in that in the spiral gasket 200 of the gasket according to the fifteenth embodiment, the positions of the "W" -shaped hoop and the "V" -shaped hoop are changed. That is, the "W" shaped hoop is located outside the gasket, and the "V" shaped hoop is located inside the gasket.
Therefore, the gasket according to the sixteenth embodiment of the present invention can be used in a special structure manufactured so that stronger pressure is applied to the outside of the joint surface of the flange than to the inside.

FIG. 22a is a cross-sectional view of a gasket according to a seventeenth embodiment of the present invention.
The gasket according to the seventeenth embodiment of the present invention is characterized in that the O-ring member 110 in the gasket according to the first embodiment is replaced by a simple ring member 510 filled inside.
Therefore, the gasket according to the seventeenth embodiment of the present invention has an effect that the manufacturing process can be further simplified by replacing the O-ring member 110 provided with the core spring 120 with a simple ring member 510. That is, although there is a case where the restoring force of the gasket is somewhat insufficient compared to the O-ring member 110 provided with the core spring 120, the ring member 510 is sufficient for the gasket adopted for the flange having a relatively low pressure. It can be adopted and used if it can provide a good resilience.

FIG. 23a is a cross-sectional view of a gasket according to an eighteenth embodiment of the present invention.
The gasket according to the eighteenth embodiment of the present invention is characterized in that, in the gasket according to the seventeenth embodiment, the hoop 210 of the spiral gasket 200 is replaced by a "V" shaped hoop.
Therefore, the manufacturing process of the spiral gasket 200 can be simplified to reduce the manufacturing cost.

FIG. 24a is a cross-sectional view of a gasket according to a nineteenth embodiment of the present invention.
The gasket according to the nineteenth embodiment of the present invention is characterized in that, in the gasket according to the seventeenth embodiment, the hoop 210 of the spiral gasket 200 is replaced by a plate-like member having a projecting portion. As a result, the gasket according to the nineteenth embodiment has the effect of being able to slightly improve the yield pressure.

FIG. 25a is a cross-sectional view of a gasket according to a twentieth embodiment of the present invention.
The gasket according to the twentieth embodiment of the present invention is the gasket according to the seventeenth embodiment, wherein the hoop 210 on the outer side of the spiral gasket 200 is formed in a "V" shape, and the inner hoop 210 is manufactured in a "W" shape It is characterized by
With such a structure, the gasket according to the twentieth embodiment of the present invention fulfills the purpose of strengthening the resilience, which is the effect of the "W" shaped hoop 210, but of the manufacturing process which is an advantage of the "V" shaped hoop 210. The cost savings of simplification can also be achieved at the same time.

FIG. 26a is a cross-sectional view of a gasket according to a twenty first embodiment of the present invention.
The gasket according to the twenty first embodiment of the present invention is the gasket according to the twentieth embodiment characterized in that the positions of the "V" -shaped hoop and the "W" -shaped hoop of the spiral gasket 200 are changed. It can be used for special constructions where the exterior of the surface receives more pressure than the interior.

FIG. 27a is a drawing showing a cross-sectional view of a gasket according to a twenty-second embodiment of the present invention.
The gasket according to the twenty-second embodiment of the present invention is characterized in that, in the gasket according to the first embodiment, the O-ring member 110 provided with the core spring 120 inside is changed to a square ring member 520.
The gasket according to the twenty-second embodiment of the present invention has the effect of simplifying the manufacturing process and lowering the manufacturing cost by replacing the O-ring member 110 with the square ring member 520.

FIG. 28a is a cross-sectional view of a gasket according to a twenty-third embodiment of the present invention.
The gasket according to the twenty-third embodiment of the present invention is characterized in that the hoop 210 of the spiral gasket 200 of the gasket according to the twenty-first embodiment is replaced by "V" shape from "W" shape.
The gasket according to the twenty-third embodiment of the present invention is effective in that the manufacturing process can be further simplified since the hoop 210 only needs to be broken once in the process of manufacturing the hoop 210 of the spiral gasket 200. .
Therefore, according to the gasket of the twenty-third embodiment of the present invention, the production cost of the gasket can be lowered.

FIG. 29a is a cross-sectional view of a gasket according to a twenty-fourth embodiment of the present invention.
The gasket according to the twenty-fourth embodiment of the present invention is characterized in that the spiral gasket 200 of the gasket according to the twenty-second embodiment is replaced with a flat hoop having a projecting portion.

FIG. 30a is a cross-sectional view of a gasket according to a twenty-fifth embodiment of the present invention.
In the gasket according to the twenty-fifth embodiment of the present invention, of the hoops 210 of the spiral gasket 200 of the gasket according to the twenty-second embodiment, the hoop 210 located outside the gasket has a "V" shape. The inwardly located hoop 210 may have a "W" shape.
The gasket according to the twenty-fifth embodiment of the present invention has lower internal pressure "W" -shaped hoop 210 so that high pressure around the flanged line can be dispersed and applied to improve restorability, so even at lower cost. The effect is to ensure the desired sealing performance.

FIG. 31a is a drawing showing a cross-sectional view of a gasket according to a twenty-sixth embodiment of the present invention.
The gasket according to the twenty-sixth embodiment of the present invention is characterized in that the hoop 210 located outside the spiral gasket 200 of the gasket according to the twenty-fifth embodiment and the hoop 210 located inside are changed. That is, a 'W' shaped hoop is disposed on the outside of the spiral gasket 200, and a 'V' shaped hoop is disposed on the inside.
Therefore, the gasket according to the twenty-fifth embodiment of the present invention has the effect of being able to secure a high restoring force in a special structure in which a higher pressure is applied to the outside from the side of the pipeline due to the structure of the flange.

FIG. 32a is a drawing showing a cross-sectional view of a gasket according to a twenty-seventh embodiment of the present invention.
The gasket according to the twenty-seventh embodiment of the present invention is characterized in that, in the gasket according to the twenty-second embodiment, the square ring member 520 is replaced by the concavo-convex ring member 530.
The uneven ring member 530 according to the twenty-seventh embodiment can be positioned to abut the outside and the inside of the spiral gasket 200, respectively. In addition, when the uneven ring member 530 is moved toward the spiral gasket 200 due to pressure inside or outside the flange, the unevenness ring member 530 is formed such that the hoop of the spiral gasket 200 is expanded. Can. That is, the asperities and grooves of the asperity ring member 530 may be formed in the same manner as the shape of the hoop of the spiral gasket 200 and serve to expand the hoop of the spiral gasket 200 when they are pressed against each other. It can be done.

FIG. 33a is a cross-sectional view of a gasket according to a twenty-eighth embodiment of the present invention.
The hoop 210 of the spiral wound gasket 200 of the gasket according to the twenty-eighth embodiment of the present invention can employ a "V" shaped hoop.
Also, an outer ring member 540 and an inner ring member 550 may be provided on the outer and inner sides of the spiral gasket 200 so that the “V” -shaped hoops may be easily spread.
Therefore, the manufacturing process of the spiral gasket 200 of the gasket can be simplified, and the outer ring member 540 and the inner ring member 550 are positioned on the outer side and the inner side of the spiral gasket 200, so that the fluid flows out from the flange joint surface. If so, the sealing effect can be maximized while the hoop of the spiral gasket 200 is expanded.

FIG. 34a is a cross-sectional view of a gasket according to a twenty-ninth embodiment of the present invention.
According to a twenty-ninth embodiment of the present invention, a "V" shaped hoop can be provided on the outer side of the spiral gasket 200 of the gasket, and a "W" shaped hoop can be provided on the inner side.
In addition, the outer ring member 540 may be positioned outside the spiral gasket 200, and the concave and convex ring member 530 may be positioned inside the spiral gasket 200. That is, the outer ring member 540 can be positioned on the outside of the gasket to match the shape of the "V" -shaped hoop 210, and the concavo-convex ring member 530 is similar to the convex-concave shape of the "W" -shaped hoop 210 on the inside. It can be located.
Therefore, when pressure is applied from the inside or the outside, the outer ring member 540 and the concavo-convex ring member 530 compress the spiral gasket 200 from both sides or one side so that the hoop expands. The effect is that the sealing effect is maximized by

FIG. 35a is a cross-sectional view of a gasket according to a thirtieth embodiment of the present invention.
In the hoop 210 of the spiral gasket 200 of the gasket according to the thirtieth embodiment of the present invention, a "W" shaped hoop is mounted on the outside of the gasket and a "V" shaped hoop is mounted on the inside it can.
In addition, an outer ring member 560 having two grooves may be positioned outside the spiral gasket 200, and an inner ring member 550 may be positioned inside the spiral gasket 200.
Thus, when fluid flows out of the mating surfaces of the flanges, the outer ring member 540 and the inner ring member 550 can be compressed in the direction of the spiral gasket 200 to cause the hoop 210 to expand.
Accordingly, the gasket is brought into close contact with the joint surface of the flange to prevent the fluid from flowing out.

The gasket according to the embodiment of the present invention may have a ring shape as a whole as shown in FIG. 3b, but is not limited thereto, and may be oval, oblong square, rhombus if necessary. diamond) and so on.
First, the can profile 600 used in various embodiments of the present invention is formed of a high temperature metal material so as to maintain excellent compressive force and resilience even under extreme conditions such as high temperature and high pressure. And may be formed of stainless steel or inconel. More specifically, “Stainless steel (Steel) 347”, “Inconel 825” and the like can be applied and formed.

However, in addition to stainless steel (SS) 300 series and 400 series, it can be selected from many series and used, and use of other special materials such as Inconel 600 series, 700 series, 800 series, etc. Does not limit the
The gasket according to various embodiments of the present invention maintains excellent compression and recovery even under extreme conditions such as high temperature and high pressure by inserting the can profile 600 inside the double jacket structure covering material. There is an effect that can be done. It is to be noted that such excellent compression force and resilience can not only achieve the effect of improving the sealing performance, but also provide a gasket that is highly resistant to gasket breakage due to cold flow or over tightening pressure. be able to. In addition, by achieving such resistance, it is possible to provide a gasket which provides excellent stability even in installation and handling in a large size.

That is, the gasket employing the can profile 600 according to various embodiments of the present invention is characterized in that it can be used at high temperature and high pressure although its compressibility is somewhat reduced compared to the spiral gasket. Also, since the gasket can profile 600 of various embodiments of the present invention will act as a stopper, it has high attachment without breakage at the non-normal flange flatness portion. effective. Also, it has the effect of providing sufficient surface stress without breakage even at high compressive strength. Here, sufficient surface pressure can be said to include severe conditions such as proper bolt torque and hot bolting.
Saw-tooth members can be formed on the upper and lower surfaces of the can profile 600, respectively. Such sawtooth members can be formed by serration processing, and the gaskets according to various embodiments of the present invention can be fastened with low clamping pressure through the sawtooth members formed on the upper and lower surfaces of the can profile 600 It has the effect of concentrating the load of the bolt on the ridge portion of the sawtooth member to maintain a tight tight seal with a low clamping pressure.

Hereinafter, each drawing is a drawing showing a cut surface of each gasket in order to effectively explain the internal configuration of the gasket.
FIGS. 3b and 4b are views showing the appearance of the gasket according to the first embodiment of the present invention and its modified form.
The gasket according to the first embodiment of the present invention may comprise a can profile 600, an O-ring member 110, a first jacket 320, and a second jacket 310, as can be seen in FIG. 4b. Specifically, the can profile 600 may be seated on the first jacket 320, and the O-ring member 110 may be provided inside the can profile 600. Also, the second jacket 310 can be bent from the top of the gasket to wrap the can profile 600, the O-ring member 110 and a portion of the first jacket 320.

  FIG. 3b is a view showing a modified form of the first embodiment of the present invention, in which a concave bend is formed on the inside of the can profile 600 provided inside the gasket so as to be in close contact with the O-ring member 110. An inner end 610 can be formed. Such an inner end portion 610 can prevent the can profile 600 inside the gasket from moving laterally to damage the O-ring member 110, thereby achieving the effect of further improving the sealing performance of the gasket. it can.

FIGS. 5b to 8b are views showing a gasket according to a second embodiment of the present invention and a modified form thereof.
A gasket according to a second embodiment of the present invention may be formed including a first jacket 320, a can profile 600, an O-ring member 110, and a second jacket 310, as can be seen in FIG. 8b. The gasket according to the second embodiment differs from the gasket according to the first embodiment in that the first jacket 320 can be bent upward to accommodate the can profile 600 and the O-ring member 110 therein. It is.

  FIGS. 5b to 7b show a modified form of the second embodiment, wherein the gasket of FIG. 5b is manufactured in a concave shape so that the inner end 610 of the can profile 600 can be in close contact with the O-ring member 110. This can be confirmed from the drawing, and it can be confirmed that the outer end 620 is formed to have a convex bend having a loose angle. Also, it can be confirmed that the gasket of FIG. 6b is formed so that both side ends of the can profile 600 have convex bends, and the gasket of FIG. 7b is the inner end of the can profile 600 inside the gasket. It can be confirmed from the drawings that only 610 is formed to have a concave bend so as to be in intimate contact with the O-ring member.

According to the second embodiment of the present invention and its modified form, the structure which can be confirmed from the drawings can prevent the first jacket 320 and the second jacket 310 from being damaged, thereby preventing external pressure. There is an effect that a stronger gasket can be provided.
Further, by protecting the inside and the outside of the gasket in a superimposed manner by the first jacket 320 and the second jacket 310, there is an effect that it is possible to provide a gasket which is stronger against external pressure and whose sealing ability is improved. .

FIGS. 9b to 12b show a gasket according to a third embodiment of the present invention and a modified form thereof.
Compared with the gasket according to the second embodiment of the present invention and the modified embodiment thereof, the gasket according to the third embodiment of the present invention and the modified embodiment thereof have the O ring member 110 inside the gasket outside the gasket. It differs in that it was located in the direction to face.
That is, the gasket according to the first embodiment and the second embodiment of the present invention has a further effective sealing property against the pressure transmitted to the gasket from the inside of the pipe flange by the O-ring member 110 being positioned inside. In the third embodiment of the present invention, when the O-ring member 110 inside the gasket is located on the outer side, the situation of low tightening pressure such as when the bolt tightening of the pipe flange is loosened. There is an effect that the O-ring member 110 can expand below and ensure sealing performance.

FIGS. 13 b to 14 b show a gasket according to a fourth embodiment of the present invention and a modified form thereof.
The gasket of the fourth embodiment of the present invention is a gasket in which the first jacket 320 is manufactured in a flat form as compared with the gasket of the third embodiment, and is a gasket that can be used under lower pressure conditions. It is a gasket of a form in which manufacturing cost can be lowered by reducing the size of the jacket.

FIGS. 15b to 16b show a gasket according to a fifth embodiment of the present invention and a modified form thereof.
The gasket according to the fifth embodiment can be provided with O-ring members 110 on both the inner and outer sides of the can profile 600. Note that the inner end 610 and the outer end 620 of the can profile 600 may all have a concave bend so as to be in intimate contact with the O-ring member 110.
Also, the gasket of FIG. 16b, which is a modified form of the gasket according to the fifth embodiment, is formed such that the inner end 610 and the outer end 620 of the can profile 600 all have convex bends with loose corners. It can be done.
Therefore, the gasket according to the fifth embodiment of the present invention can maintain strong sealability even under low clamping pressure and resistance to the fluid pressure of the pipeline by the O-ring members 110 provided on both sides of the can profile 600. Two effects can be achieved, and furthermore, the first jacket 320 or the second jacket 310 can be externally impacted or the like by the inner end 610 and the outer end 620 of the can profile 600 formed in a concave or convex shape. It has the effect of being able to prevent damage.

17b through 18b illustrate a gasket according to a sixth embodiment of the present invention and a modified form thereof.
The basic structure of the gasket according to the sixth embodiment is similar to that of the gasket according to the fifth embodiment, but the first jacket 320 is bent above the gasket and provided on the outside and inside of the can profile 600. The difference is that the ring member 110 is wrapped.
The gasket according to the sixth embodiment of the present invention is stronger against external pressure and is broken by the overlapping protection of the inside and outside of the gasket by the first jacket 320 and the second jacket 310. There is an effect that can provide a gasket with less fear.

FIGS. 19b to 21b are views showing a gasket according to a seventh embodiment of the present invention and a modified form thereof.
The gasket according to the seventh embodiment includes an O-ring member 110 centrally disposed inside the gasket, a can profile 600 provided inside the O-ring member 110, an outer can profile 700 provided outside the O-ring member 110, a first The jacket 320 and the second jacket 310 can be formed. Here, the can profile 600 and the outer can profile 700 are substantially the same, and they are terms different from each other, but are terms for dividing the can profiles disposed on both sides of the O-ring member 110. It should be noted that it is not meant to refer to indicating, it should be noted that it is the term used for ease of distinction in the description of the present invention.

The can profile 600 located inside the gasket according to the seventh embodiment of the present invention may be formed with an outer end 620 having a concave bend for intimate contact with the O-ring member 110, The outer can profile 700 located on the outside of the gasket can also be formed with a second inner end 710 for close contact with the O-ring member 110. Also, the shapes of the outer end 620 and the second inner end 710 may be variously shaped as can be seen from FIGS. 19b to 21b.
The O-ring member 110 located at the center of the inside of the gasket, the can profile 600 located at the inside of the O-ring member 110, and the outer can profile 700 located at the outside of the O-ring member 110 are covered by the first jacket 320 It can be housed inside. Also, the second jacket 310 can be bent to wrap the O-ring member 110, the can profile 600, the outer can profile 700 and the first jacket 320 from the top of the gasket.
According to the gasket of the seventh embodiment of the present invention, the pressure applied through the O-ring member located at the center of the gasket can be uniformly dispersed, and the load of the fastening bolt can be sawtoothed even under a low clamping pressure. It is effective to concentrate on the mountain portion of the member to achieve higher sealing performance.

22b-23b show a gasket according to an eighth embodiment of the present invention and a modified form thereof.
The gasket according to the eighth embodiment of the present invention is similar in structure to the gasket according to the first embodiment of the present invention, but differs in that a spring 120 is provided inside the O-ring member 110. . In addition, such a spring 120 can employ | adopt a plate coil spring.
The gasket according to the eighth embodiment secures the restoring force of the gasket by the spring 120 employed inside the O-ring member 110, and the effect of evenly distributing the pressure applied from the outside and prolonging the life of the gasket There is.
In addition, as described above, when the concave portion having the curvature radius similar to that of the O-ring member 110 is provided so that the inner end portion 610 of the can profile 600 can be in close contact with the O-ring member 110, O An effect that can prevent the ring member 110 from being damaged can also be provided.

24b through 27b illustrate a gasket according to a ninth embodiment of the present invention and a modified form thereof.
The gasket according to the ninth embodiment of the present invention has a basic structure similar to that of the gasket according to the second embodiment, but is different in that a spring 120 is further provided inside the O-ring member 110. The structure has the effect of dispersing the externally applied pressure as described above to extend the life of the gasket.
The gasket of the ninth embodiment also has the shape of the inner end 610 and the outer end 620 of the can profile 600 to prevent the damage of the O-ring member 110 or the first jacket 320 and the second jacket 310. It can be formed into a concave bend or a convex bend having gentle corners.

FIGS. 28b to 31b are views showing a gasket according to a tenth embodiment of the present invention and a modified form thereof.
The gasket according to the tenth embodiment of the present invention differs from the gasket according to the third embodiment of the present invention in that a spring 120, in particular, a plate coil spring, is provided inside the O-ring member 110. The effects that can be achieved by such a structure are as described above.

32b to 33b are views showing a gasket according to an eleventh embodiment of the present invention and a modified form thereof.
The gasket of the eleventh embodiment is provided with a spring 120 inside the O-ring member 110 of the gasket of the fourth embodiment, and such a spring 120 achieves better resilience and sealing performance. be able to.

34b through 35b illustrate a gasket according to a twelfth embodiment of the present invention and a modified form thereof.
The gasket according to the twelfth embodiment of the present invention is characterized in that the O-ring member 110 of the gasket according to the fifth embodiment is provided with a spring 120 in the form of a flat coil spring. It is characterized in that a greater restoring force and sealability can be achieved than the gasket of the above.

36b to 37b are views showing a gasket according to a thirteenth embodiment of the present invention and a modified form thereof.
The gasket according to the thirteenth embodiment of the present invention is also characterized in that it further comprises a spring 120 inside the O-ring member 110 as compared to the gasket according to the sixth embodiment, and the additional effects that can be achieved through this are described above. It is as

FIGS. 38b through 40b show a gasket according to a fourteenth embodiment of the present invention and a modified form thereof.
The gasket according to the fourteenth embodiment is characterized in that the gasket according to the seventh embodiment is further provided with a spring 120 inside the O-ring member 110 in order to improve restoring force and sealability.

  In the following, FIGS. 41 b to 71 b are gaskets further including a seal layer 800 on the first jacket 320 and the second jacket 310 in each of the embodiments of the gasket described above, wherein the gasket of this embodiment is Provides the effect of further improving the sealing ability of the above-mentioned gasket.

FIGS. 41b through 42b illustrate a gasket according to a fifteenth embodiment of the present invention and a modified form thereof.
The gasket according to the fifteenth embodiment of the present invention is characterized in that a seal layer 800 is further provided on the first jacket 320 and the second jacket 310 of the gasket according to the first embodiment. Such a seal layer 800 may be formed from any one or a combination of graphite, mica, polytetrafluoroethylene (PTFE), silver, atomized stainless steel, and ceramic. Can.
According to the gasket of the fifteenth embodiment of the present invention, the seal layer 800 further maintains the close contact of the joint surface between the gasket and the flange together with the effect of the gasket of the first embodiment. It is possible to provide further improved sealing performance.

FIGS. 43b through 46b show a gasket according to a sixteenth embodiment of the present invention and a modified form thereof.
The gasket according to the sixteenth embodiment of the present invention is characterized in that a seal layer 800 is further provided on the first jacket 320 and the second jacket 310 of the gasket according to the second embodiment, such a seal. The layer 800 has the effect of further improving the sealability of the gasket by further maintaining the close contact of the joint surface between the gasket and the flange.

Figures 47b to 50b show a gasket according to a seventeenth embodiment and a modified form thereof.
The gasket according to the seventeenth embodiment of the present invention also has a sealing layer 800 further on the first jacket 320 and the second jacket 310 of the gasket according to the third embodiment for the purpose of improving the sealing performance. It features.

51b to 52b are views showing a gasket according to an eighteenth embodiment and a modified form thereof.
The gasket according to the eighteenth embodiment of the present invention is characterized in that a seal layer 800 is further provided on the first jacket 320 and the second jacket 310 in the gasket according to the fourth embodiment.

53b to 54b are views showing a gasket according to a nineteenth embodiment and a modified form thereof.
The gasket according to the nineteenth embodiment of the present invention also has a sealing layer 800 on the outer surface of the gasket according to the fifth embodiment, and has the effect of providing a more stable sealing effect than the gasket according to the fifth embodiment. .

55b to 56b are views showing a gasket according to a twentieth embodiment and a modified form thereof.
The gasket according to the twentieth embodiment of the present invention is the gasket according to the sixth embodiment except that a seal layer 800 is further provided on the first jacket 320 and the second jacket 310 of the gasket. It is.

57b to 59b are views showing a gasket according to a twenty-first embodiment and a modified embodiment thereof.
The gasket according to the twenty first embodiment of the present invention is the gasket according to the seventh embodiment, further comprising a seal layer 800 on the first jacket 320 and the second jacket 310. The effects that can be achieved by this are as described above.

60b to 61b are views showing a gasket according to a twenty-second embodiment and a modified form thereof.
The gasket according to the twenty-second embodiment further comprises a seal layer 800 on the first jacket 320 and the second jacket 310 of the gasket according to the eighth embodiment for the purpose of improving the sealing performance. It is.

62b to 65b are views showing a gasket according to a twenty-third embodiment and a modified form thereof.
A gasket according to a twenty-third embodiment of the present invention is an invention characterized in that the gasket according to the ninth embodiment further includes a seal layer 800 in order to improve sealability.

66b to 69b show a gasket according to a twenty-fourth embodiment and a modified form thereof.
The gasket according to the twenty-fourth embodiment of the present invention is characterized in that a seal layer 800 is further formed on the first jacket 320 and the second jacket 310 of the gasket according to the tenth embodiment.

70b to 71b are views showing a gasket according to a twenty-fifth embodiment and a modified form thereof.
The gasket of the twenty-fifth embodiment of the present invention is characterized in that the gasket of the eleventh embodiment further comprises a seal layer 800.

  Hereinafter, FIGS. 72 b to 76 b show the appearance of the gasket characterized in that seal layers are formed on the upper and lower sides of the can profile in the jacket. The gasket of this embodiment can effectively prevent the can profile 600 from being damaged by the external pressure through the inner seal layers 810 formed on the upper and lower surfaces of the can profile 600.

  FIG. 72b is a view showing a gasket according to a twenty-sixth embodiment, characterized in that an inner seal layer 810 is further formed on the upper surface and the lower surface of the can profile 600 in the gasket according to the first embodiment.

  FIG. 73b is a view showing a gasket according to a twenty-seventh embodiment characterized in that an inner seal layer 810 is provided on the upper surface and the lower surface of the can profile 600 in the gasket according to the tenth embodiment.

  FIG. 74b is a view showing a gasket according to a twenty-eighth embodiment. The gasket according to the eleventh embodiment is further provided with an inner seal layer 810 on the upper surface and the lower surface of the can profile 600.

FIG. 75b is a view showing a gasket according to a twenty-ninth embodiment characterized in that an inner seal layer 810 is further provided on the upper surface and the lower surface of the can profile 600 in the gasket according to the fourteenth embodiment.
The effects that can be achieved by this are as described above.

  76b is a view showing a gasket according to a thirtieth embodiment characterized in that an inner seal layer 810 is further provided on the upper surface and the lower surface of the can profile 600 in the gasket according to the third embodiment.

77b to 80b show an embodiment in which not only the seal layer 800 is provided on the gasket jacket, but also the inner seal layer 810 is further provided on the upper and lower surfaces of the inner can profile 600, respectively. is there.
Thus, the gasket of such an embodiment can provide higher sealing capability through the sealing layer 800 formed on the jacket, and through the inner sealing layer 810 formed on the upper and lower surfaces of the can profile 600 inside the gasket. The external pressure can prevent the can profile 600 from being damaged.

  FIG. 77b is a view showing a gasket according to a thirty first embodiment, which is characterized in that an inner seal layer 810 is further provided on the upper surface and the lower surface of the can profile 600 in the gasket according to the fifteenth embodiment.

  78b is a view showing a gasket according to a thirty-second embodiment, wherein the seal layer 800 is further formed on the first jacket 320 and the second jacket 310 in the gasket according to the twenty-seventh embodiment. It features.

  79b is a view showing a gasket according to a thirty third embodiment, wherein the seal layer 800 is further formed on the first jacket 320 and the second jacket 310 in the gasket according to the twenty eighth embodiment. It features.

  FIG. 80b is a view showing a gasket according to a thirty-fourth embodiment, wherein the seal layer 800 is further formed on the first jacket 320 and the second jacket 310 in the gasket according to the twenty-ninth embodiment. It features.

  FIG. 81b is a view showing a gasket according to a thirty-fifth embodiment, which comprises a sealing layer 800 formed on the first jacket 320 and the second jacket 310 of the gasket according to the seventeenth embodiment; An inner seal layer 810 is formed on the upper and lower surfaces of the can profile 600, respectively.

The gasket according to an embodiment of the present invention may have a ring shape as a whole as shown in FIG. 3c, but is not limited thereto, and may be oval, oblong square, rhombus (if necessary). diamond) and so on.
First, the can profile 10 used in various embodiments of the present invention is formed of a high temperature metal material so as to maintain excellent compression and resilience even under extreme conditions such as high temperature and high pressure. It can be made of stainless steel (steinless) or inconel. More specifically, “stainless steel 347”, “Inconel 825” and the like can be applied and formed.

Hereinafter, each drawing is a drawing showing a cut surface of each gasket in order to effectively explain the internal configuration of the gasket.
FIGS. 2c to 3c are views showing a gasket according to a first embodiment of the present invention and its modified form.
The gasket according to the first embodiment of the present invention includes a can profile 10, a C ring end 11 formed inside the can profile 10, and an O ring member 20 housed inside the C ring end 11. it can.
In addition, sawtooth members can be formed on the upper and lower surfaces of the can profile 10, respectively. Such sawtooth members can be formed by serration processing, and the gaskets according to various embodiments of the present invention can be fastened at low clamping pressure through the sawtooth members formed on the upper and lower surfaces of the can profile 10 This has the effect of concentrating the bolt load on the ridges of the sawtooth member and maintaining a tight seal even under low tightening pressure.
Further, the gasket according to the first embodiment of the present invention can easily form the O-ring member 20 on one side of the can profile 10 without forming an outer jacket by forming the C ring end 11 inside the can profile 10. It has the effect of being fixed and attached to the Moreover, such an O-ring member 20 has an effect of improving the restoring force of the gasket by providing the gasket with a large yield property.

  The gasket of FIG. 3c can further comprise a length adjustment end 13 outside the can profile 10 of the gasket of the first embodiment. Such a length adjustment end 13 is a portion where a sawtooth member is not formed, and can be used when the size of the gasket is matched to the size of the flange.

4c to 5c are views showing a gasket according to a second embodiment of the present invention and a modified form thereof.
The gasket according to the second embodiment of the present invention is characterized in that the hoop support end 12 is formed on the outside of the can profile 10 of the gasket, and such hoop support end 12 effectively adheres the hoop 30 A recessed groove can be provided to support.
The hoop 30 of the gasket according to the second embodiment of the present invention can be made of a zigzag shaped cross section and a metal strip having elasticity, and as can be seen from FIG. 4c, it has two peaks and one valley. It can be manufactured in the "W" shape. Also, two ridges of such a hoop 30 are formed to face the outside of the gasket to prevent the hoop 30 from spreading due to fluid pressure to prevent additional outflow if fluid is drained from the flange ducts Can perform the function.

In addition, the hoop 30 applied to the gasket of various embodiments of the present invention may be formed in a "W" shape with three folds formed at three locations. Since such a “W” shaped hoop 30 has three folds, the pressure applied from the outside of the gasket is uniformly dispersed and applied to the respective folds, so that the hoop 30 has an external pressure. Have the effect of preventing them from surrendering and losing their resilience.
It should be noted that the two ridges of such a hoop 30 can be arranged to face the outside of the gasket. Therefore, the hoop support end 12 can accommodate one valley of the hoop 30 effectively in the recess, which is a concave groove, to prevent the hoop 30 from being detached to the outside.
FIG. 5 c shows an example in which the appearance of the hoop support end 12 is modified in the gasket according to the second embodiment. Such a modification of the second embodiment has an effect that the hoop can be supported more firmly by closely forming the depth of the recess of the hoop support end 12 more deeply.

6c to 7c illustrate a gasket according to a third embodiment of the present invention.
The gasket according to the third embodiment of the present invention is characterized in that the filler 31 is filled between the hoops 30. Such a filler 31 can be composed of graphite, but is not limited thereto, and can be composed of any one of graphite, ceramic and mica or a combination thereof. That is, non-asbestos materials can be used.
Also, the non-metallic filler 31 used in various embodiments of the present invention functions to maintain the residual stress of the hoop 30 constant while the hoop 30 plastically deforms.

FIG. 7c is a view showing a modified example of the gasket according to the third embodiment of the present invention, in which the hoop supporting end 12 has a deeper recess than in the gasket of FIG. It is possible to provide the effect of closely supporting.
Also, in the gasket of various embodiments of the present invention, a spring 40 can be inserted into the C-ring end 11 of the can profile 10 instead of the O-ring member 20. Also, the gaskets of the various embodiments of the present invention can be uniquely used without the insertion of O-ring member 20 or spring 40 inside C-ring end 11 of can profile 10. Such a C-ring end 11 of such a can profile 10 may play a role of self-energizing in the presence of external pressure to improve sealing.

FIGS. 8c to 9c are views showing a gasket according to a fourth embodiment of the present invention and a modification thereof, wherein the gasket of the fourth embodiment is the inside of the O-ring member 20 of the gasket according to the first embodiment. A spring 40 is provided. Moreover, a plate coil spring can be adopted as such a spring 40.
With such a spring 40, the gasket according to the fourth embodiment can ensure the restoring force of the gasket and can uniformly disperse the pressure applied from the outside to prolong the life of the gasket.

10c to 11c are views showing a gasket according to a fifth embodiment of the present invention and its modification.
The gasket according to the fifth embodiment is characterized in that the gasket according to the second embodiment further comprises a spring 40 inside the O-ring member 20, and the effect that can be achieved by such a spring 40 is as described above. .

12c to 13c are views showing a gasket according to a sixth embodiment of the present invention and its modification.
The gasket according to the sixth embodiment is also the gasket according to the third embodiment, further including a spring 40 inside the O-ring member 20.

Hereinafter, FIGS. 14 c to 25 c are drawings showing an embodiment of a gasket characterized in that the camphor 10 has a convex shape.
14c to 15c are views showing a gasket according to a seventh embodiment of the present invention and modified examples thereof.
The can profile 10 of the gasket according to the seventh embodiment is characterized in that the upper surface and the lower surface are formed to be convex. Also, the sawtooth members formed on the upper and lower surfaces of the can profile 10 are characterized in that they are formed intermittently. That is, the ridges of the sawtooth members are not continuous, but a horizontal region is formed between the peaks.

Also, the heights of the peaks of such sawtooth members can be substantially the same. That is, although the appearance of the upper surface and the lower surface of the can profile 10 is generally convex, the heights of the ridges of the sawtooth members respectively formed on the upper surface and the lower surface are substantially the same. It can contact uniformly.
Therefore, the gasket according to the seventh embodiment has a convex shape as a whole, whereby the pressure applied from the outside can be efficiently dispersed, and the sawtooth members formed on the upper surface and the lower surface of the can profile 10 The effect of maintaining high sealability even under low clamping pressure can be achieved.
FIG. 15c is a view showing a modification of the seventh embodiment and shows that the length adjustment end 13 is formed in the outer direction of the can profile 10, the effect of which is as described above.

16c to 17c are views showing a gasket according to an eighth embodiment of the present invention and a modified form thereof.
The gasket according to the eighth embodiment is characterized in that the hoop support end 12 is formed in the outer direction of the can profile 10 and the hoop 30 is brought into close contact by using such a hoop support end 12. Do. FIG. 17c also shows an example of a gasket having a hoop support end 12 formed with a deeper recess.

  FIGS. 18c to 19c are views showing a gasket according to a ninth embodiment of the present invention and a modification thereof, and in the gasket according to the third embodiment, the can profile 10 is formed to be convex. It is drawing which shows the appearance of a gasket, The effect is as above-mentioned.

20c to 21c are views showing a gasket according to a tenth embodiment of the present invention and a modified form thereof.
The gasket of the tenth embodiment is characterized in that a spring 40 is further provided inside the O-ring member 20 of the gasket of the seventh embodiment in order to improve the restoring force of the gasket. Also, the gasket of FIG. 21 c is characterized in that the length adjustment end portion 13 is further formed in the outward direction of the can profile 600.

22c to 23c are views showing a gasket according to an eleventh embodiment of the present invention and a modified form thereof.
The gasket according to the eleventh embodiment is also characterized in that a spring 40 is further provided inside the O-ring member 20 of the gasket according to the eighth embodiment in order to improve the restoring force.

24c to 25c are views showing a gasket according to a twelfth embodiment of the present invention and a modified form thereof.
The gasket according to the twelfth embodiment is characterized in that the spring 40 is further positioned inside the O-ring member 20 in the gasket according to the ninth embodiment, and the effect by this is as described above.

The gasket of the embodiment of FIGS. 26 c to 49 c is a drawing showing that the C-ring end 11 of the can profile 10 is formed on the outside of the gasket.
In the gasket of such an embodiment, the C-ring end 11 of the can profile 10 is formed in the outward direction so that the O-ring member 20 is positioned on the outside of the gasket and an impact applied from the outside of the pipe flange. It has the effect of providing toughness against That is, when the O-ring member 20 is positioned inside, the O-ring member 20 is positioned on the outside of the gasket, as well as performing the function of efficiently blocking the pressure applied from the flow path side of the conduit. By doing this, the gasket of various embodiments of the present invention can provide a gasket that is more resistant to external impact.

  First, FIGS. 26 to 27 are views showing a gasket according to a thirteenth embodiment of the present invention and a modified form thereof, wherein the C-ring end 11 and the gasket are accommodated in this as compared with the gasket according to the first embodiment. It is characterized in that the O-ring member 20 is located at the outer portion of the gasket.

  FIGS. 28c to 29c are views showing a gasket according to a fourteenth embodiment of the present invention, in which the positions of the C ring end 11 and the O ring member 20 are transferred from the inside to the outside in the gasket of the eighth embodiment. It is characterized by

  30c to 31c are views showing a gasket according to a fifteenth embodiment of the present invention, in which the positions of the C ring end 11 and the O ring member 20 are changed in opposite directions in the gasket according to the ninth embodiment. It is characterized by

  32c to 33c are views showing a gasket according to a fifteenth embodiment of the present invention and a modified form thereof, wherein the O-ring member 20 of the gasket of the thirteenth embodiment is used to improve the sealing performance of the gasket. It is characterized by further providing a spring 40 inside.

  34c to 35c are views showing a gasket according to a sixteenth embodiment of the present invention and a modified form thereof, in which the directions of the O-ring member 20 and the hoop 30 of the gasket according to the eleventh embodiment are outward. FIGS. 36c to 37c show a gasket according to a seventeenth embodiment of the present invention, further comprising a filler 31 between hoops 30 of the gasket according to the sixteenth embodiment. I assume.

  38c to 39c show a gasket according to an eighteenth embodiment and a modified form thereof, wherein the C ring end 11 and the O ring member 20 of the gasket of the seventh embodiment are moved to the outside of the gasket Show that.

  40c through 41c are views showing the gasket according to the nineteenth embodiment and its modified form, wherein the C ring end 11 and the O ring member 20 of the gasket according to the second embodiment are directed outward of the gasket It is drawing which shows having been located.

  42c to 43c are views showing a gasket according to a twentieth embodiment and a modified form thereof, characterized in that respective structures of the gasket according to the third embodiment are shown in a state of being symmetrically moved. .

  FIGS. 44c to 45c show a gasket according to a twenty first embodiment and a modified form thereof, wherein the O ring member 20 of the gasket of the eighteenth embodiment is further improved in order to further improve the restoring force. A spring 40 is further provided.

  46c to 47c are views showing the gasket according to the twenty-second embodiment and the modified form thereof, in which the spring 40 is similarly provided in the O-ring member 20 of the gasket according to the nineteenth embodiment. Show. In addition, a plate coil spring can be adopted and used as such a spring 40.

  FIGS. 48c to 49c show a gasket according to a twenty-third embodiment and a modified form thereof, wherein a spring 40 is provided inside the O-ring member 20 to achieve high sealing performance through improvement of restoring force. Furthermore, it is a drawing characterized by having.

1d to 4d show the appearance of a gasket according to another embodiment of the present invention.
In Figures 1d to 4d, the right side of the drawing shows the inward direction of the gasket and the left side shows the outward direction. Also, the spring inside the O-ring member positioned in the outward direction of the gasket according to the preferred embodiment of the present invention can be selectively provided, and a flat coil spring can be adopted as the corresponding spring. However, the can profile 600 according to another embodiment of the present invention can optionally form a sawtooth member. Such a sawtooth member can perform the role of preventing the fluid flowing in the pipeline from leaking to the outside by concentrating the pressure applied under a low clamping pressure to the peak of the sawtooth member. In addition, the spiral gasket 200 formed of the hoop and the filler of the gasket according to various embodiments of the present invention may be located inside or in the center of the jacket, and two ridges of the hoop face outward. As oriented, when the fluid flowing out of the pipeline of the flange is generated, the pressure can expand the hoop and prevent the fluid from leaking to the outside. That is, the gasket according to various embodiments of the present invention may further improve sealing performance by performing complementary roles of the can profile 600 and the spiral gasket 200.

  While the present invention has been described with reference to the preferred embodiments, those skilled in the art will recognize that the present invention can be practiced without departing from the spirit and scope of the invention as set forth in the appended claims. It can be understood that the invention can be variously modified and changed.

Reference Signs List 1 tube 2 flange 5 conventional spiral gasket hoop 6 conventional spiral gasket filler 10 can profile 11 C ring end 20 O ring member 12 hoop support end 13 length adjustment end 30 hoop 31 filler 40 spring DESCRIPTION OF SYMBOLS 110 O ring member 111 C ring member 120 Core spring 121 Flat coil spring 122 Coil spring 200 Spiral gasket 210 Hoop 220 Filler 310 Second jacket 320 First jacket 410 Third seal layer 411 Inner seal layer 420 Outer seal layer 421 First Seal layer 422 Second seal layer 510 Ring member 520 Square ring member 530 Irregular ring member 540 External ring member 550 Internal ring member 560 External ring member 600 with two groove parts 600 Kanprofa 610 inner end 620 outer end 700 outer can profile 710 second inner end 800 seal layer 810 inner seal layer

Claims (12)

A gasket interposed between a tube and a flange which is the connection between the tube,
The gasket is
Profile (kammprofile);
A gasket comprising: a C-ring end formed inside the can profile; and an O-ring member provided in the C-ring end. A gasket interposed between flanges which is a connection site between tubes and comprising:
The gasket is
Can profile;
A gasket comprising: a C-ring end formed on the outside of the can profile; and an O-ring member provided in the C-ring end. A saw tooth is formed on the upper surface of the can profile.
The gasket according to claim 1 or 2, wherein a saw tooth is formed on the lower surface of the can profile.   The gasket of claim 3, wherein the serrations are formed through serration processing. The upper surface of the can profile is convexly formed,
The gasket according to claim 1 or 2, wherein the lower surface of the can profile is formed in a convex shape.   The gasket according to claim 1, further comprising a spring provided inside the O-ring member.   The gasket of claim 6, wherein the spring is a plate coil spring.   The gasket of claim 1, further comprising an outer hoop support end formed outside of the can profile.   The gasket according to claim 8, wherein the outer hoop support end is formed with a V-shaped groove for receiving a recess of the hoop. A hoop member closely attached to the outer hoop support end;
The hoop member is formed in the shape of a crown (w) consisting of two peaks and one valley,
The gasket according to claim 8, wherein the two ridges of the hoop member face outward of the gasket.   The gasket according to claim 10, wherein a filler is filled between the hoops of the hoop member.   The gasket according to claim 11, wherein the filler is formed of any one or a combination of graphite, ceramic, and mica.