Impregnated flat gasket and method of producing the gasket

Details Impregnated flat gasket and method of producing the gasket Impregnated flat gasket and method of producing the gasket

1992-03-10

1994-04-26

Lesmes, George F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428285, 428290, 428457, 4284735, 4284744, B32B 516

Patent

active

053065530

ABSTRACT:
An impregnated flat gasket useful as a cylinder head gasket for an internal-combustion engine, includes a fiber mat comprised of from about 2 to about 20 weight percent of a synthetic organic fiber; from about 10 to about 70 weight percent of a first inorganic filler which has a grain size having a maximum of 0.01 mm and which has a specific surface area having a maximum of 30 m.sup.2 /g; from about 10 to about 70 weight percent of a second inorganic filler which is composed of particles having a shape which is one of needle-shaped and globular, which has a grain size having a maximum of 0.01 mm and which has a specific surface area ranging from 50 to 350 m.sup.2 /g; from about 0.5 to about 1 weight percent of zinc oxide; and from about 3 to about 10 weight percent of a nitrile butadiene latex. The impregnated fiber mat material can be punched into gasket blanks without problems.

REFERENCES:
patent: 4078075 (1988-05-01), Beyer et al.
patent: 4271228 (1981-06-01), Foster et al.
patent: 4330442 (1982-05-01), Lindeman et al.
patent: 4557969 (1985-12-01), Berbner et al.
patent: 4859526 (1989-08-01), Potepan et al.
patent: 5098777 (1992-03-01), Koli

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