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US 4,477,094 AGranted
Gasket and method for high-temperature and high pressure application
AssigneeNichias Corporation
InventorsTsutomu Yamamoto, Masaaki Ashizawa, Kazuo Nishimoto, Yuji Sekiguchi
Life of this patent
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Abstract
A gasket including a sheet having a composition of 40 to 80% by weight of thin flakes of expanded vermiculite, 1 to 30% by weight of fibers, 5 to 40% by weight of fine filling grains, and appropriate amounts of a binding agent and a vulcanizing agent. The sheet also has a metal plate laminated thereto. A vortex gasket may be formed by spirally winding a metal hoop together with a filling material, which is composed primarily of expanded vermiculite.
Claims6
A gasket comprising:
- a sheet having a composition of 40 to 80% by weight of thin flakes of expanded vermiculite, 1 to 30% by weight of fibers, 5 to 40% by weight of fine filling grains, and appropriate amounts of a binding agent and a vulcanizing agent;
- and a metal plate laminated to said sheet.
Dependencies are inferred from the claim text.