CA1050070A - Seal for sealing flanges and other objects - Google Patents
Seal for sealing flanges and other objectsInfo
- Publication number
- CA1050070A CA1050070A CA243,281A CA243281A CA1050070A CA 1050070 A CA1050070 A CA 1050070A CA 243281 A CA243281 A CA 243281A CA 1050070 A CA1050070 A CA 1050070A
- Authority
- CA
- Canada
- Prior art keywords
- flanges
- seal
- annular
- packing
- metal packing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/12—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering
- F16J15/121—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering with metal reinforcement
- F16J15/127—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering with metal reinforcement the reinforcement being a compression stopper
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
- Centrifugal Separators (AREA)
Abstract
Abstract of the Disclosure This invention deals with improvements in a seal for sealing flanges, covers and other objects, which seal consists of a combination of at least one metal annular packing and one elastic annular packing, one of them being situated concentrically about the other one, the metal packing serving mainly as a sealing member and the elastic packing serving as a backing ring. One of the flanges is provided with a stepped recess by which the position of the seal is fully defined and by which the seal is supported laterally. In case of providing the seal in the form of two mutually spaced concentric metal packings between which the elastic packing is fitted, the stepped recess in the flange possesses an appre-ciably lower upright edge.
Description
~L~S()~70 The invention relates to a seal for sealing flanges, covers and other objects, wh;ch seal consists of a combination of at least one metal annular packing and one elastic, for example rubber, annular packing, here-inafter called a metal packing and an elastic packing, respectively.
Such seals are known according to the British patent specification 1,134,096.
According to this patent specification, such a seal is used between two flanges each possessing a surface which is entirely smooth, meaning that no grooves or similar recesses are made in the flange surface. This will make it difficult, when the seal is being fitted between the flanges, to determine the proper position for the seal. Another disadvantage is that in case of contraction or jamming of the flanges which enclose the seal, the seal must be carefully prevented from becoming displaced with respect to the flanges, which might cause part of the seal to overlap the flange passages. A seal which has moved out of position furthermore has the dis-advantage that the pressure applied to the seal, on account of the contrac-tion or jamming of the flanges, is no longer distributed uniformly over that seal, which can advance the formation of leakage.
The invention aims at obviating the above disadvantage by providing one of the flanges with a stepped recess within which the seal is placed As a result, the position of the seal with respect to the flanges and to the passage in the flanges is fully defined.
According to the present invention there is provided a joint between two flanges or the like having parallel opposed sealing surfaces, character-ized in that the joint comprises a seal which is formed as an annular metal packing member having a shape in transverse section of two oppositely directed ~-shaped rings which face toward the flanges and which have a common integral wall so as to provide two annular spaces, which metal packing member has axially facing surfaces in sealing engagement with the sealing surfaces of said flanges, and an annular elastic member in each of said ~ - 1 -:10S0070 spaces, which elastic members engage the sealing surfaces of the respec-tive flanges and the walls of the respective spaces, while the sealing sur--face of one of the flanges or the like has a stepped recess in which said seal is fi~ted and which recess has an upright edge which serves as a lateral support for the outer circumference of said seal ~ e_-- - t ~ - , Y-_ and the height of said edge is smaller than the height of the U-shaped rings.
The metal packing serves as a sealing member, with the elastic members serving as backing rings. Thus, if a leakage should develop at the metal packing, the elastic members can retain any leaking medium.
Because the elastic members are fitted between two metal packings, a seal is obtained which prevents leaking of a medium either from the inside of the flanges to the outside or from the environment of the flanges to the inside thereof.
The metal packings are preferably made of a material which is relatively softer and more plastic than the material of the flanges. An example of a suitable material for the metal packings is aluminium.
The material of the metal packings is preferably of a very small thickness, namely, in the order of 0.5 millimeter. It has been found in ~ests that when the flanges between which the seal is provided become contracted or jammed, the outer edges of such metal packings penetrate slightly into the material of the flanges, thus causing an annular groove to be formed, which optimizes the sealing effect.
In the accompanying drawings which illustrate exemplary embodiments of the present invention:
Figure l is a vertical section of two flanges between whiCh one embodiment of seal according to the invention is fitted; and Figure 2 is a vertical section of two flanges between which another embodiment of the seal is fitted.
According to Figure 1, the flanges l and 2 enclose a seal 3 in which two elastic annular packings 16 and 17 are fitted in the annular spaces b~.
lOS0070 formed by two metal packings 18 and 19. As the drawing indicates~ each of the packings 18 and 19 is U-shaped in transverse section. The two metal packings are connected integrally by a common wall 20 in such a way that the two U-shapes are directed oppositely to each other. Seal 3 is fitted in a stepped recess 6 provided in the flange 2. This recess 6 defines the position of the seal 3, while the upright edge 7 serves at the same time as a lateral support for the outer circumference of the ~tal packing 18. A medium con-tained in the passages 8 and 9 of the flanges 1 and 2 is retained by the metal packing 19. In case of a leakage in the seal between the metal packing and one of the flanges, the elastic packing 17 will serve as a backing ring and retain any medium which may have leaked out. Similarly, the packings 18 and 17 prevent leakage from the outside in.
Figure 2 shows an embodiment of the seal, again fitted between two flanges 1 and 2 and allowing an especially powerful sealing effect to be obtained. The seal here consists of three spaced, concentric metal annular packings 21, 22 and 23, which are integrally connected by horizontal annular parts 24 and 25. The annular part 24 is here provided on the upper side of the seal between the metal packings 22 and 23, while the annular part 25 is provided on the underside of the seal between the metal packings 21 and 22.
Elastic packings 26 and 27 are fitted in the annular spaces between the metal packings 21 and 22 and 23, respectively. It will be evident from the follow-ing that an especially powerful sealing effect is obtained with the embodiment of the seal as shown in Figure 2.
A medium contained inside the flanges 1 and 2 will primarily be pro-tected by the metal packing 21 from leaking to the surrounding space. Should a leak develop on the upper side of that packing, further leakage will be prevented not only by the elastic packing 26, but by the metal packings 22 and 23 as well.
A similar argument applies if a leak should develop on the underside of the metal packing 21, and also if a medium from the surrounding space should tend to flow through a leak in the metal packing 23 to the inside of the flanges.
,~
Such seals are known according to the British patent specification 1,134,096.
According to this patent specification, such a seal is used between two flanges each possessing a surface which is entirely smooth, meaning that no grooves or similar recesses are made in the flange surface. This will make it difficult, when the seal is being fitted between the flanges, to determine the proper position for the seal. Another disadvantage is that in case of contraction or jamming of the flanges which enclose the seal, the seal must be carefully prevented from becoming displaced with respect to the flanges, which might cause part of the seal to overlap the flange passages. A seal which has moved out of position furthermore has the dis-advantage that the pressure applied to the seal, on account of the contrac-tion or jamming of the flanges, is no longer distributed uniformly over that seal, which can advance the formation of leakage.
The invention aims at obviating the above disadvantage by providing one of the flanges with a stepped recess within which the seal is placed As a result, the position of the seal with respect to the flanges and to the passage in the flanges is fully defined.
According to the present invention there is provided a joint between two flanges or the like having parallel opposed sealing surfaces, character-ized in that the joint comprises a seal which is formed as an annular metal packing member having a shape in transverse section of two oppositely directed ~-shaped rings which face toward the flanges and which have a common integral wall so as to provide two annular spaces, which metal packing member has axially facing surfaces in sealing engagement with the sealing surfaces of said flanges, and an annular elastic member in each of said ~ - 1 -:10S0070 spaces, which elastic members engage the sealing surfaces of the respec-tive flanges and the walls of the respective spaces, while the sealing sur--face of one of the flanges or the like has a stepped recess in which said seal is fi~ted and which recess has an upright edge which serves as a lateral support for the outer circumference of said seal ~ e_-- - t ~ - , Y-_ and the height of said edge is smaller than the height of the U-shaped rings.
The metal packing serves as a sealing member, with the elastic members serving as backing rings. Thus, if a leakage should develop at the metal packing, the elastic members can retain any leaking medium.
Because the elastic members are fitted between two metal packings, a seal is obtained which prevents leaking of a medium either from the inside of the flanges to the outside or from the environment of the flanges to the inside thereof.
The metal packings are preferably made of a material which is relatively softer and more plastic than the material of the flanges. An example of a suitable material for the metal packings is aluminium.
The material of the metal packings is preferably of a very small thickness, namely, in the order of 0.5 millimeter. It has been found in ~ests that when the flanges between which the seal is provided become contracted or jammed, the outer edges of such metal packings penetrate slightly into the material of the flanges, thus causing an annular groove to be formed, which optimizes the sealing effect.
In the accompanying drawings which illustrate exemplary embodiments of the present invention:
Figure l is a vertical section of two flanges between whiCh one embodiment of seal according to the invention is fitted; and Figure 2 is a vertical section of two flanges between which another embodiment of the seal is fitted.
According to Figure 1, the flanges l and 2 enclose a seal 3 in which two elastic annular packings 16 and 17 are fitted in the annular spaces b~.
lOS0070 formed by two metal packings 18 and 19. As the drawing indicates~ each of the packings 18 and 19 is U-shaped in transverse section. The two metal packings are connected integrally by a common wall 20 in such a way that the two U-shapes are directed oppositely to each other. Seal 3 is fitted in a stepped recess 6 provided in the flange 2. This recess 6 defines the position of the seal 3, while the upright edge 7 serves at the same time as a lateral support for the outer circumference of the ~tal packing 18. A medium con-tained in the passages 8 and 9 of the flanges 1 and 2 is retained by the metal packing 19. In case of a leakage in the seal between the metal packing and one of the flanges, the elastic packing 17 will serve as a backing ring and retain any medium which may have leaked out. Similarly, the packings 18 and 17 prevent leakage from the outside in.
Figure 2 shows an embodiment of the seal, again fitted between two flanges 1 and 2 and allowing an especially powerful sealing effect to be obtained. The seal here consists of three spaced, concentric metal annular packings 21, 22 and 23, which are integrally connected by horizontal annular parts 24 and 25. The annular part 24 is here provided on the upper side of the seal between the metal packings 22 and 23, while the annular part 25 is provided on the underside of the seal between the metal packings 21 and 22.
Elastic packings 26 and 27 are fitted in the annular spaces between the metal packings 21 and 22 and 23, respectively. It will be evident from the follow-ing that an especially powerful sealing effect is obtained with the embodiment of the seal as shown in Figure 2.
A medium contained inside the flanges 1 and 2 will primarily be pro-tected by the metal packing 21 from leaking to the surrounding space. Should a leak develop on the upper side of that packing, further leakage will be prevented not only by the elastic packing 26, but by the metal packings 22 and 23 as well.
A similar argument applies if a leak should develop on the underside of the metal packing 21, and also if a medium from the surrounding space should tend to flow through a leak in the metal packing 23 to the inside of the flanges.
,~
Claims (4)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A joint between two flanges or the like having parallel opposed sealing surfaces, characterized in that the joint comprises a seal which is formed as an annular metal packing member having a shape in transverse sec-tion of two oppositely directed U-shaped rings which face toward the flanges and which have a common integral wall so as to provide two annular spaces, which metal packing member has axially facing surfaces in sealing engagement with the sealing surfaces of said flanges, and an annular elastic member in each of said spaces, which elastic members engage the sealing surfaces of the respective flanges and the walls of the respective spaces, while the sealing surface of one of the flanges or the like has a stepped recess in which said seal is fitted and which recess has an upright edge which serves as a lateral support for the outer circumference of said seal and the height of said edge is smaller than the height of the U-shaped rings.
2. A joint according to claim 1, wherein the annular metal packing mem-ber is made of a material which is soft in relation to the material of the flanges.
3. A joint according to claim 2 wherein the metal packing member is made of aluminum.
4. A joint according to claims 1, 2 or 3, wherein the thickness of the material of the annular metal packing member is so small that when the flanges are jammed together the outer edges of the rings penetrate into the material of the flanges.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7500619A NL7500619A (en) | 1975-01-20 | 1975-01-20 | SEAL FOR SEALING FOR EXAMPLE FLANGES. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1050070A true CA1050070A (en) | 1979-03-06 |
Family
ID=19823016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA243,281A Expired CA1050070A (en) | 1975-01-20 | 1976-01-09 | Seal for sealing flanges and other objects |
Country Status (7)
| Country | Link |
|---|---|
| BE (1) | BE837669A (en) |
| CA (1) | CA1050070A (en) |
| DE (1) | DE2601735A1 (en) |
| FR (1) | FR2298042A1 (en) |
| GB (1) | GB1530722A (en) |
| IT (1) | IT1053340B (en) |
| NL (1) | NL7500619A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2385011A1 (en) * | 1977-03-23 | 1978-10-20 | Joint Francais | COMPOSITE GASKET |
| IT1194716B (en) * | 1980-11-14 | 1988-09-22 | Raimondi Spa | GASKET FOR STATIC SEAL OF HIGH PRESSURE AND TEMPERATURE FLUIDS |
| DE3246136C1 (en) * | 1982-12-14 | 1987-11-12 | Rasmussen Gmbh, 6457 Maintal | Pipe coupling |
| SE441210B (en) * | 1984-01-30 | 1985-09-16 | Bertil Borg | Sealing ring of composite type |
| DE3622485A1 (en) * | 1986-07-04 | 1988-01-14 | Haenni & Cie Gmbh | Pressure-measuring device |
| CN113847489A (en) * | 2021-09-29 | 2021-12-28 | 常州三众弹性技术有限公司 | Flange sealing structure |
| DE102022110971A1 (en) * | 2022-05-04 | 2023-11-09 | Valeo Powertrain Gmbh | Fluid line component with axial seal |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1274813A (en) * | 1960-11-03 | 1961-10-27 | Goetzewerke | Sealing washer |
| DE1917326A1 (en) * | 1968-04-05 | 1969-10-23 | Robert Ford | Sealing ring washer provided with annular protuberances (21-27) around the washer hole (20) these being concentrically and alternatingly arranged on each side |
| US3531133A (en) * | 1968-11-08 | 1970-09-29 | Res Eng Co | Seal |
| US3721452A (en) * | 1971-02-22 | 1973-03-20 | Psi Prod Inc | Gasket assembly for pipe flanges |
-
1975
- 1975-01-20 NL NL7500619A patent/NL7500619A/en unknown
-
1976
- 1976-01-09 CA CA243,281A patent/CA1050070A/en not_active Expired
- 1976-01-15 GB GB159376A patent/GB1530722A/en not_active Expired
- 1976-01-16 FR FR7601070A patent/FR2298042A1/en active Granted
- 1976-01-19 IT IT4769176A patent/IT1053340B/en active
- 1976-01-19 BE BE163592A patent/BE837669A/en unknown
- 1976-01-19 DE DE19762601735 patent/DE2601735A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| BE837669A (en) | 1976-05-14 |
| GB1530722A (en) | 1978-11-01 |
| NL7500619A (en) | 1976-07-22 |
| FR2298042A1 (en) | 1976-08-13 |
| FR2298042B1 (en) | 1981-11-13 |
| IT1053340B (en) | 1981-08-31 |
| DE2601735A1 (en) | 1976-07-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3215442A (en) | Fluid seal | |
| US3930656A (en) | Sealed joint and gasket therefor | |
| US4040636A (en) | Composite packing | |
| US4840379A (en) | Split sealing ring having a bias cut | |
| US5482296A (en) | Sealing rings and sealed assemblies | |
| US3469854A (en) | Header ring | |
| GB1369258A (en) | Composite seal | |
| KR950006286A (en) | Mechanical cotton seal | |
| CA1050070A (en) | Seal for sealing flanges and other objects | |
| US4394025A (en) | Pipe compression seal for bell and spigot joint | |
| US3885801A (en) | Packing | |
| DE3467234D1 (en) | Rotary shaft seal | |
| US3271037A (en) | Pressure-balanced segmental packing rings | |
| ATE98754T1 (en) | GASKETS. | |
| US4195855A (en) | Seal for sealing flanges and other objects | |
| GB1215240A (en) | Sealing device and flange joint including such device | |
| JPS6233468B2 (en) | ||
| GB946373A (en) | Sealing assembly | |
| CA1324397C (en) | Seal between two parts of a conduit coupling which are rotatable with respect to each other | |
| US5188374A (en) | One-piece seal for rotating annular interface | |
| GB1512217A (en) | Pipe joints | |
| US4362304A (en) | Packing arrangement for a floating piston | |
| US3717293A (en) | Seal assembly | |
| US3485142A (en) | Liner seal for diesel engines and the like | |
| EP0404358A2 (en) | Mechanical face seals |