Head gasket with sealing rings having multi-stage compressibility
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United States of America Patent
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Dec 31, 1991
Issued Date -
N/A
app pub date -
Jul 17, 1990
filing date -
Jul 13, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A head gasket sealing assembly having a two-stage seal ring positioned to sealingly circumscribe each said combustion opening, each seal ring defining a pair of annular sections which are integrally formed, one of which lies radially inwardly of the other, one section being readily deformable and compressible and having a vertical dimension greater than that of the second section and providing an initial compressible seal, the second section being less readily deformable and compressible in use and providing a secondary seal and resistance to thermal push in use.
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