WO2021070482A1 - Dispositif d'étanchéité - Google Patents

Dispositif d'étanchéité Download PDF

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Publication number
WO2021070482A1
WO2021070482A1 PCT/JP2020/031262 JP2020031262W WO2021070482A1 WO 2021070482 A1 WO2021070482 A1 WO 2021070482A1 JP 2020031262 W JP2020031262 W JP 2020031262W WO 2021070482 A1 WO2021070482 A1 WO 2021070482A1
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WO
WIPO (PCT)
Prior art keywords
seal lip
elastic body
body portion
reinforcing ring
sealing
Prior art date
Application number
PCT/JP2020/031262
Other languages
English (en)
Japanese (ja)
Inventor
正芸 内山
Original Assignee
Nok株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nok株式会社 filed Critical Nok株式会社
Publication of WO2021070482A1 publication Critical patent/WO2021070482A1/fr

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    • 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
    • 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

Definitions

  • the present invention relates to a sealing device, and more particularly to a sealing device that performs static sealing.
  • a gasket as a sealing device that is attached to an annular space such as an annular groove formed between a plurality of members that are immovably opposed to each other such as a housing and a cover and seals a gap between the members.
  • Such a conventional gasket has a tubular reinforcing ring extending in the axial direction of an annular shape around the axis, and an elastic body portion made of an elastic body attached to the reinforcing ring, and the elastic body portion is the reinforcing ring.
  • Some have a pair of lip portions extending along the axis from both ends in the axial direction of the (see, for example, Patent Document 1).
  • the gasket that can prevent the deterioration of the sealing performance is such that the upper and lower lips are compressed in the axial direction and move to the inner peripheral side in the used state. A large seal width can be secured by falling down. Further, even if the lip falls to the inner peripheral side, the posture of the gasket can be maintained by supporting the reinforcing ring. In this way, efforts have been made to reduce the size while maintaining the sealing performance, but due to this compression in the used state, stress is generated inside the elastic body part, and the stress is concentrated especially in the vicinity of the reinforcing ring. In this case, cracks starting from the corners of the joint with the reinforcing ring may occur in the elastic body portion. Further, such cracks may occur not only in the above-mentioned miniaturized gasket but also in other gaskets.
  • the present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a sealing device capable of preventing stress from concentrating in the vicinity of a reinforcing ring of an elastic body portion in a used state. is there.
  • the sealing device is a sealing device for sealing an annular space formed by a plurality of members, and has an annular reinforcing ring around an axis and the reinforcing ring.
  • An annular elastic body portion is provided around the axis formed from the attached elastic body, and the elastic body portion includes a seal lip which is an annular portion protruding toward one side in the axial direction.
  • the reinforcing ring has a seal lip that is an annular portion that protrudes toward the other side in the axial direction, and the reinforcing ring faces the seal lip that protrudes toward the one side and the other side. It is characterized in that it is at least partially embedded at the position of the elastic body portion that does not overlap with each of the protruding seal lips in the axial direction.
  • a portion radially adjacent to the seal lip projecting toward one side thereof is a seal lip projecting toward the one side. On the other hand, it is recessed on the other side.
  • a portion radially adjacent to the seal lip projecting toward the other side is a seal lip projecting toward the other side. On the other hand, it is dented on one side.
  • the elastic body portion is an annular surface extending between the seal lip projecting toward one side and the seal lip projecting toward the other side. It has a sealing side surface, and the sealing side surface is recessed on the side opposite to the side facing the sealing side surface.
  • the reinforcing ring is embedded in the elastic body portion from the outer peripheral side.
  • the sealing device According to the sealing device according to the present invention, it is possible to prevent stress from concentrating in the vicinity of the reinforcing ring of the elastic body portion in the used state.
  • FIG. 5 is an enlarged cross-sectional view showing an enlarged cross section of one side of the sealing device shown in FIG. It is sectional drawing which shows the use state of the sealing apparatus which concerns on embodiment of this invention.
  • FIG. 1 is a cross-sectional view taken along the axis x of the sealing device 1 according to the embodiment of the present invention
  • FIG. 2 is an enlarged cross-sectional view showing an enlarged cross section of one side of the sealing device 1 shown in FIG. Is.
  • the arrow a (see FIG. 1) direction is the outside in the axis x direction
  • the arrow b (see FIG. 1) direction is the other side in the axial direction) in the axis x direction. Is the inside.
  • the direction away from the axis x (direction of arrow c in FIG. 1) is set as the outer peripheral side, and the direction closer to the axis x (arrow d in FIG. 1).
  • Direction is the inner circumference side.
  • the sealing device 1 has an annular reinforcing ring 10 around the axis x and an axis x formed of an elastic body attached to the reinforcing ring 10. It is provided with an annular elastic body portion 20 around it.
  • the elastic body portion 20 has an outer seal lip 21 as a seal lip, which is an annular portion protruding toward one side (outside) in the axis x direction, and a protrusion toward the other side (inside) in the axis x direction. It has an inner seal lip 22 as a seal lip which is an annular portion to be formed.
  • the reinforcing ring 10 is at least partially embedded at the position of the elastic body portion 20 that does not overlap the outer seal lip 21 projecting outward and the inner seal lip 22 projecting inward in the axial direction x direction.
  • the sealing device 1 is a gasket, and is used for sealing an annular space formed by a plurality of members. This annular space is formed, for example, between members such as a housing and a cover that are immovably opposed to each other. Hereinafter, the sealing device 1 will be specifically described.
  • the reinforcing ring 10 is a disk-shaped member extending along the radial direction, and is, for example, a disk-shaped or substantially disk-shaped member having an axis x as a central axis or a substantially central axis. It has an inner peripheral end 11 which is an end on the inner peripheral side and an outer peripheral end 12 which is an end on the outer peripheral side.
  • the reinforcing ring 10 is a portion that reinforces the elastic body portion 20.
  • the reinforcing ring 10 is formed of, for example, a metal material, and examples of the metal material include stainless steel and SPCC (cold rolled steel).
  • the resin material include nylon 66 (PA66) and polyphenylene sulfide (PPS) resin.
  • the elastic body portion 20 is formed so that the reinforcing ring 10 is embedded at least partially, and has an outer seal lip 21 and an inner seal lip 22 as described above. Further, the elastic body portion 20 has a base portion 23, an outer recess 24, an inner recess 25, and a sealing side surface 26. As shown in FIGS. 1 and 2, the base portion 23 is a portion where the reinforcing ring 10 is embedded, and the outer seal lip 21 and the inner seal lip 22 extend from the base portion 23, respectively. Specifically, the outer seal lip 21 protrudes from the outer end portion (outer end 23a) of the base portion 23, and the inner seal lip 22 protrudes from the inner end portion (inner end 23b) of the base portion 23. Further, the base portion 23 is formed with an outer recess 24, an inner recess 25, and a sealing side surface 26.
  • the outer seal lip 21 projects outward (in the direction of arrow a) from the inner peripheral side portion of the outer end 23a of the base portion 23.
  • the outer seal lip 21 protrudes so as to have, for example, a rectangular or trapezoidal cross-sectional shape, and has a seal surface 21a which is an annular surface facing the outside.
  • the sealing surface 21a is an annular flat surface or a substantially flat surface centered on or substantially centered on the axis x.
  • the outer seal lip 21 has an inner peripheral surface 21b which is a surface facing the flow path to be sealed and an outer peripheral surface which is a surface facing the outer peripheral side facing the inner peripheral surface 21b. It has 21c.
  • the inner peripheral surface 21b is a cylindrical surface or a substantially cylindrical surface centered on or substantially centered on the axis x
  • the outer peripheral surface 21c is an inclined surface whose diameter increases inward in the axis x direction.
  • the outer seal lip 21 has a protruding amount such that the seal surface 21a comes into contact with the outer seal surface to be attached in the use state described later.
  • the amount of protrusion of the outer seal lip 21 is the width of the outer seal lip 21 in the extending direction (protruding direction).
  • the inner seal lip 22 projects inward (in the direction of arrow b) from the inner peripheral side portion of the inner end 23b of the base portion 23.
  • the inner seal lip 22 protrudes so as to have, for example, a rectangular or trapezoidal cross-sectional shape, and has a seal surface 22a which is an annular surface facing the outside.
  • the sealing surface 22a is an annular flat surface or a substantially flat surface centered on or substantially centered on the axis x.
  • the inner seal lip 22 has an inner peripheral surface 22b which is a surface facing the flow path to be sealed and an outer peripheral surface which is a surface facing the outer peripheral side facing the inner peripheral surface 22b. It has 22c.
  • the inner peripheral surface 22b is a cylindrical surface or a substantially cylindrical surface centered on or substantially centered on the axis x
  • the outer peripheral surface 22c is an inclined surface whose diameter increases outward in the axis x direction.
  • the inner seal lip 22 has a protruding amount such that the seal surface 22a comes into contact with the inner seal surface to be attached in the use state described later.
  • the amount of protrusion of the inner seal lip 22 is the width of the inner seal lip 22 in the extending direction (protruding direction).
  • the protruding amount of the inner seal lip 22 is larger than the protruding amount of the outer seal lip 21. Further, the inner seal lip 22 projects so that the seal surface 22a of the inner seal lip 22 is located on the inner peripheral side of the seal surface 21a of the outer seal lip 21, and the base portion 23 is formed. That is, as shown in FIG. 2, in the base portion 23, the inner end 23b extends toward the inner circumference side with respect to the outer end 23a.
  • the outer recess 24 is adjacent to the outer seal lip 21 on the outer peripheral side, and is defined by the outer peripheral surface 21c of the outer seal lip 21 and the outer surface 23c of the base 23 from the seal surface 21a of the outer seal lip 21. Is a space that dents on the inner circumference side.
  • the outer side surface 23c is a surface facing the outside formed by exposing the outer end 23a of the base portion 23.
  • the outer recess 24 is formed on the outer peripheral side, which is the back side of the outer seal lip 21, and serves as a space.
  • the inner recess 25 is adjacent to the inner seal lip 22 on the outer peripheral side, and is defined by the outer peripheral surface 22c of the inner seal lip 22 and the inner side surface 23d of the base 23 from the sealing surface 22a of the inner seal lip 22. Is a space that dents on the inner circumference side.
  • the inner side surface 23d is a surface facing the inside formed by exposing the inner end 23b of the base portion 23.
  • the inner recess 25 is formed on the outer peripheral side, which is the back side of the inner seal lip 22, and serves as a space.
  • the sealing side surface 26 is an annular surface extending between the outer seal lip 21 and the inner seal lip 22, and is a surface facing the sealed flow path.
  • the sealing side surface 26 is connected to the inner peripheral surface 21b of the outer seal lip 21 and the inner peripheral surface 22b of the inner seal lip 22. As shown in FIG. 2, the sealing side surface 26 is recessed on the outer peripheral side.
  • the reinforcing ring 10 is attached to the elastic body portion 20 by burying a part (embedded portion 13) on the inner peripheral side including the inner peripheral end 11 in the base portion 23 from the outer peripheral side. That is, the reinforcing ring 10 projects toward the outer peripheral side from the outer peripheral surface 23e, which is a surface facing the outer peripheral side of the base portion 23.
  • the entire reinforcing ring 10 may be embedded in the elastic body portion 20. In this case, the entire reinforcing ring 10 becomes the buried portion 13.
  • the embedded portion 13, which is a portion of the reinforcing ring 10 embedded in the elastic body portion 20, is an elastic body that does not overlap the outer seal lip 21 and the inner seal lip 22 in the axis x direction, respectively. It is located at the position of part 20. That is, the projection of the outer seal lip 21 inward in the axis x direction does not overlap the embedded portion 13 of the reinforcing ring 10, and the projection of the inner seal lip 22 outward in the axis x direction is the projection of the inner seal lip 22 in the embedded portion of the reinforcing ring 10. It does not overlap with 13.
  • the embedded portion 13 of the reinforcing ring 10 may be located at the position of the elastic body portion 20 that does not overlap with the seal surface 21a of the outer seal lip 21 and the seal surface 22a of the inner seal lip 22 in the axial direction x direction.
  • Examples of the elastic body of the elastic body portion 20 include various rubber materials.
  • Examples of various rubber materials are synthetic rubbers such as nitrile rubber (NBR), hydrogenated nitrile rubber (H-NBR), acrylic rubber (ACM), and fluororubber (FKM).
  • the reinforcing ring 10 is manufactured by, for example, press working or forging, and the elastic body portion 20 is molded by cross-linking (vulcanization) molding using a molding die. At the time of this cross-linking molding, the reinforcing ring 10 is arranged in the molding die, the elastic body portion 20 is adhered to the reinforcing ring 10 by cross-linking adhesion, and the elastic body portion 20 and the reinforcing ring 10 are integrally molded. Will be done.
  • FIG. 3 is a cross-sectional view showing a usage state of the sealing device 1.
  • the sealing device 1 is attached to the mounting space S, which is an annular space, and is in a used state.
  • the mounting space S is, for example, annular or substantially annular around the axis x1 formed by the cover 100 in which the through hole 101 is formed and the housing 110 in which the through hole 111 to which the cover 100 is fixed is formed. It is a space.
  • a groove 113 forming an annular groove is formed on the surface 112 of the housing 110, and the groove 113 includes an outer peripheral wall surface 113a extending in a cylindrical or substantially cylindrical shape in the axis x1 direction and an outer circumference. It is defined by an inner sealing surface 113b, which is an annular flat surface extending from the inner end of the wall surface 113a to the through hole 111 toward the inner peripheral side.
  • the cover 100 is fixed to the housing 110 so that the surface 102 of the cover 100 faces the surface 112 of the housing 110. Further, the cover 100 is fixed to the housing 110 so that the through hole 101 is coaxial or substantially coaxial with the through hole 111 of the housing 110, and the through hole 101 and the through hole 111 communicate with each other to form one flow path.
  • the through tube 120 is formed as a housing. On the surface 102 of the cover 100, the annular plane facing the inner sealing surface 113b of the housing 110 in the axis x1 direction is the outer sealing surface 102a.
  • the mounting space S is an annular space defined by the above-mentioned outer sealing surface 102a, the outer peripheral wall surface 113a, and the inner sealing surface 113b.
  • the sealing device 1 is attached to the mounting space S, seals the mounting space S, and seals the through pipe 120 formed by the through hole 101 and the through hole 111.
  • the sealing device 1 is mounted in the mounting space S coaxially or substantially coaxially with the mounting space S. That is, in the used state, the axis x and the axis x1 overlap or are slightly deviated.
  • the elastic body portion 20 is sandwiched between the cover 100 and the housing 110 and compressed in the used state. Specifically, the seal surface 21a of the outer seal lip 21 is in contact with the outer seal surface 102a, and the outer seal lip 21 is pressed inward by the outer seal surface 102a. Similarly, the seal surface 22a of the inner seal lip 22 is in contact with the inner seal surface 113b, and the inner seal lip 22 is pressed outward by the inner seal surface 113b.
  • the elastic body portion 20 In the used state, the elastic body portion 20 is compressed in the axis x direction as described above. Therefore, stress is generated inside the elastic body portion 20. In particular, a large stress is generated between the outer seal lip 21 and the inner seal lip 22 inside the elastic body portion 20.
  • the embedded portion 13 of the reinforcing ring 10 is located at the position of the elastic body portion 20 that does not overlap the outer seal lip 21 and the inner seal lip 22 in the axial x direction, respectively, and a large stress is applied in the used state.
  • the embedded portion 13 is not located between the generated outer seal lip 21 and the inner seal lip 22. Therefore, the stress can be prevented from being concentrated on the portion of the elastic body portion 20 in contact with the embedded portion 13. As a result, it is possible to prevent the elastic body portion 20 from cracking starting from the portion of the elastic body portion 20 that comes into contact with the embedded portion 13.
  • the sealing side surface 26 of the elastic body portion 20 is recessed toward the outer peripheral side, and the outer seal lip 21 and the inner seal lip 22 are on the inner peripheral side when the elastic body portion 20 is compressed in the axis x direction in the used state. It is easy to fall down. Therefore, the stress generated inside the elastic body portion 20 can be concentrated on the inner diameter side portion of the elastic body portion 20, and the stress can be prevented from being concentrated in the vicinity of the embedded portion 13 of the elastic body portion 20. it can. This also makes it possible to prevent the elastic body portion 20 from cracking starting from the portion of the elastic body portion 20 that comes into contact with the embedded portion 13.
  • the elastic body portion 20 is formed with an outer recess 24 and an inner recess 25, and the back side of the outer seal lip 21 is a space, and the back side of the inner seal lip 22 is a space.
  • the rigidity of the outer seal lip 21 and the inner seal lip 22 is reduced, and the outer seal lip 21 and the inner seal lip 22 are likely to fall toward the inner peripheral side. Therefore, the stress generated inside the elastic body portion 20 can be reduced.
  • the outer recess 24 and the inner recess 25 reduce the filling rate of the elastic body portion 20 with respect to the mounting space S, which also reduces the stress generated inside the elastic body portion 20.
  • sealing side surface 26 of the elastic body portion 20 is recessed toward the outer peripheral side, and the outer seal lip 21 and the inner seal lip 22 are tilted toward the inner peripheral side in the used state, fluid or the like passing through the through pipe 120 can be used.
  • the pressure of the object to be sealed acts on the sealing side surface 26, the outer sealing lip 21 and the inner sealing lip 22. That is, the outer seal lip 21 is pushed outward, the inner seal lip 22 is pushed inward, and the seal surface 21a of the outer seal lip 21 and the seal surface 22a of the inner seal lip 22 are each pushed by the pressure of the sealing object. It is pressed against the outer sealing surface 102a and the inner sealing surface 113b, and a so-called self-sealing action is generated. Therefore, the sealing performance of the sealing device 1 can be improved.
  • the sealing device 1 can improve the followability to the variation in the dimensions of the mounting space S.
  • the sealing device 1 As described above, according to the sealing device 1 according to the embodiment of the present invention, it is possible to prevent stress from concentrating in the vicinity of the reinforcing ring 10 of the elastic body portion 20 in the used state.
  • the present invention is not limited to the sealing device according to the embodiment of the present invention, and includes all aspects included in the concept and claims of the present invention. ..
  • each configuration may be selectively combined as appropriate so as to achieve at least a part of the above-mentioned problems and effects.
  • the shape, material, arrangement, size, etc. of each component in the above embodiment can be appropriately changed depending on the specific usage mode of the present invention.
  • the sealing surface 21a of the outer seal lip 21 does not have to be a flat surface or a substantially flat surface as described above, and as an example, the cross section may be a curved surface having a contour such as an arc shape, a semicircle, or an arc shape.
  • the inner peripheral surface 21b of the outer seal lip 21 does not have to be a cylindrical surface or a substantially cylindrical surface as described above, and as an example, the cross section may be a curved surface having a curved contour.
  • the sealing surface 22a of the inner seal lip 22 does not have to be a flat surface or a substantially flat surface as described above, and as an example, the cross section may be a curved surface having an arc shape, a semicircle, an arc shape, or the like. ..
  • the inner peripheral surface 22b of the inner seal lip 22 does not have to be a cylindrical surface or a substantially cylindrical surface as described above, and as an example, the inner peripheral surface 22b may be a curved surface having a curved cross section.
  • the elastic body portion 20 may be provided with only one of the outer recess 24 and the inner recess 25.
  • the elastic body portion 20 is attached to the inner peripheral side of the reinforcing ring 10, but the elastic body portion 20 may be attached to the outer peripheral side of the reinforcing ring 10.
  • the elastic body portion 20 has a shape symmetrical in the radial direction with the shape shown in the drawing, and the outer seal lip 21, the inner seal lip 22, and the sealing side surface 26 are located on the outer peripheral side of the elastic body portion 20, and the sealing device. 1 comes to form a sealed flow path on the outer peripheral side.
  • the application of the sealing device according to the present invention is not limited to the above-mentioned cover and housing, and the sealing device according to the present invention includes vehicles such as automobiles, motorcycles, general-purpose machines, and any other objects that can use the present invention.
  • the part can be applied.
  • Sealing device 10 ... Reinforcing ring, 11 ... Inner peripheral end, 12 ... Outer peripheral end, 13 ... Embedded part, 20 ... Elastic body part, 21 ... Outer seal lip, 21a ... Seal surface, 21b ... Inner peripheral surface, 21c ... outer peripheral surface, 22 ... inner seal lip, 22a ... seal surface, 22b ... inner peripheral surface, 22c ... outer peripheral surface, 23 ... base, 23a ... outer end, 23b ... inner end, 23c ... outer surface, 23d ... inner surface, 23e ... Outer surface, 24 ... Outer recess, 25 ... Inner recess, 26 ... Sealed side surface, 100 ... Cover, 101 ... Through hole, 102 ...

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gasket Seals (AREA)

Abstract

L'objet de la présente invention est de prévenir une concentration de contrainte à proximité d'une bague de renforcement d'une partie corps élastique pendant l'utilisation.　Un dispositif d'étanchéité (1) est pourvu d'une bague de renforcement (10), et d'une partie corps élastique (20) fixée à la bague de renforcement (10). La partie corps élastique (20) a une lèvre d'étanchéité externe (21), qui est une partie annulaire faisant saillie vers l'extérieur, et une lèvre d'étanchéité interne (22), qui est une partie annulaire faisant saillie vers l'intérieur. La bague de renforcement (10) est au moins partiellement incorporée dans la partie corps élastique (20) dans une position qui, dans la direction axiale x, ne chevauche pas la lèvre d'étanchéité externe (21) sur l'extérieur et la lèvre d'étanchéité interne (22) sur l'intérieur.
PCT/JP2020/031262 2019-10-08 2020-08-19 Dispositif d'étanchéité WO2021070482A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-185547 2019-10-08
JP2019185547 2019-10-08

Publications (1)

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WO2021070482A1 true WO2021070482A1 (fr) 2021-04-15

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PCT/JP2020/031262 WO2021070482A1 (fr) 2019-10-08 2020-08-19 Dispositif d'étanchéité

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50140008U (fr) * 1974-05-02 1975-11-18
JPS55151954U (fr) * 1979-04-17 1980-11-01
JPH0632834U (ja) * 1992-09-30 1994-04-28 エヌオーケー株式会社 ガスケット
JPH11294593A (ja) * 1998-04-09 1999-10-29 Suzuki Motor Corp シール部材
JP2019015325A (ja) * 2017-07-05 2019-01-31 Nok株式会社 ガスケット

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50140008U (fr) * 1974-05-02 1975-11-18
JPS55151954U (fr) * 1979-04-17 1980-11-01
JPH0632834U (ja) * 1992-09-30 1994-04-28 エヌオーケー株式会社 ガスケット
JPH11294593A (ja) * 1998-04-09 1999-10-29 Suzuki Motor Corp シール部材
JP2019015325A (ja) * 2017-07-05 2019-01-31 Nok株式会社 ガスケット

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