Metal laminate gasket

Seal for a joint or juncture – Seal between fixed parts or static contact against... – Contact seal between parts of internal combustion engine

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Details

F16J 1508, F02F 1100

Patent

active

061458473

ABSTRACT:
The invention relates to a metal laminate gasket for use in an internal combustion engine, such as a cylinder head gasket. The gasket includes at least two metal plates, each having at least one hole to be sealed and a plurality of bolt holes. In one embodiment, the first metal plate includes an annular bead portion surrounding the at least one hole. The second metal plate is arranged to cover the recess of the bead portion of the first metal plate. A rigid synthetic resin layer fills a part of the recess of the bead portion of the first metal plate. The rigid synthetic resin layer serves to increase the thickness of the lamination of the gasket to enhance the sealing effect and serves to limit the degree of compression of the bead portion when the gasket is compressed. The rigid synthetic resin layer is covered with the first metal plate and the second metal plate, and thus does not come into direct contact with the joint surfaces. Accordingly, there is no fear that the rigid synthetic resin layer may be worn away by friction with the joint surface because of vibration, or thermal expansion or contraction of the joint surfaces during the operation of the engine. The rigid synthetic resin layer may be formed on the surface of the second metal plate opposing said recess.

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