Fretting corrosion resistant gasket and method of making same

Details Fretting corrosion resistant gasket and method of making same Fretting corrosion resistant gasket and method of making same

1976-04-19

1978-08-01

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277166, F16J 1510

Patent

active

041039130

ABSTRACT:
A multilayer engine gasket is provided for resisting scoring, scratching and fretting corrosion. The gasket includes a metal core or substrate, an intermediate phosphate layer and an exterior layer of anti-fretting material. The metal core is preferably formed of steel and is constructed and arranged to be mounted between an engine head and block of an internal combustion engine, such as a diesel engine. A pair of piston-size apertures and a plurality of oil and water passageways are defined in the metal core. The intermediate phosphate layer enhances the ability of the anti-fretting material to adhere to the gasket and provides and assists in resisting anti-fretting corrosion. The exterior layer of anti-fretting material is formulated from a ratio of from about 65 per cent to about 35 per cent polytetrafluoroethylene to a ratio from about 35 per cent to about 65 per cent molybdenum disulfide by weight. A separately screened-on silicone bead may optionally border the peripheral edges of the metal core so as to provide a peripheral seal.

REFERENCES:
patent: 2074388 (1937-03-01), Gordon
patent: 2578523 (1951-12-01), Llewellyn
patent: 2600321 (1952-06-01), Pyle
patent: 2809130 (1957-10-01), Rappaport
patent: 3794333 (1974-02-01), Czernik

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