IP Library › Granted Patent US 12692942
Granted Patent B2
US 12692942 · App. 17/912,292 · Granted Jul 28, 2026

Rubber-metal laminate and gasket

Inventors: Isao Watanabe (Fukushima, JP); Ryota Shimura (Fukushima, JP); Daiki Takekawa (Kanagawa, JP)
Assignee: NOK CORPORATION
F16J15/0825
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Quick Facts
Patent No.
US 12692942
App. No.
17/912,292
Granted
Jul 28, 2026
Kind
B2
Abstract

A rubber-metal laminate that includes a metal member; and a rubber layer provided on the metal member, wherein the rubber layer has a 100%-modulus value in accordance with JIS K6251 of 6.0 MPa or more and a thickness of less than 80 μm. The gasket includes the rubber-metal laminate.

Claims (19)

1 . A rubber-metal laminate comprising:

a metal member; and

a rubber layer provided on the metal member,

wherein

the rubber layer has a 100%-modulus value in accordance with JIS K6251:2017 of 6.0 MPa or more and a thickness of less than 80 μm, and the rubber layer has a hardness in accordance with JIS K6253:2020 of 75 or more and 90 or less,

the rubber layer contains a nitrile rubber and only a single type of carbon black,

the carbon black is MT carbon or SRF carbon,

when the carbon black is the MT carbon, a blending amount of the carbon black is 85 parts by mass or more per 100 parts by mass of rubber component,

the rubber layer contains at least one of a calcium carbonate, a silica, and a plasticizer,

a blending amount of the calcium carbonate is 10 parts by mass or more and 100 parts by mass or less per 100 parts by mass of the rubber component,

a blending amount of the silica is 5 parts by mass or more and 50 parts by mass or less per 100 parts by mass of the rubber component, and

a blending amount of the plasticizer is 1 part by mass or more and 50 parts by mass or less per 100 parts by mass of the rubber component.

2 . The rubber-metal laminate according to claim 1 , wherein the rubber layer has a 100%-modulus value in accordance with JIS K6251:2017 of 8.0 MPa or more.

3 . The rubber-metal laminate according to claim 1 , wherein the rubber layer has an elongation value in accordance with JIS K6251:2017 of 100% or more.

4 . The rubber-metal laminate according to claim 1 , wherein the rubber layer has a thickness of 30 μm or more.

5 . The rubber-metal laminate according to claim 1 , wherein the rubber layer contains 28 mass % or more of carbon black based on a total mass of the rubber layer.

6 . The rubber-metal laminate according to claim 1 , wherein the metal member and the rubber layer are bonded with at least one adhesive selected from the group consisting of a phenolic resin and an epoxy resin disposed therebetween.

7 . The rubber-metal laminate according to claim 1 , wherein the rubber layer contains a nitrile rubber.

8 . A gasket comprising the rubber-metal laminate according to claim 1 .