Metal gasket

Details Metal gasket Metal gasket

1988-11-22

1990-11-06

Shoap, Allan N.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277234, 277235A, F16J 1510

Patent

active

049680455

ABSTRACT:
A metal gasket for an internal combustion engine has cylinder openings and a cooling water openings and is coated on its outer surface with a surface treatment agent. The surface treatment agent in a region of the metal gasket surrounding the cooling water openings has been removed. A method of producing a metal gasket having at least a cooling water opening comprises steps of coating a surface treatment agent on an outer surface of the metal gasket, covering by a masking jig the outer surface of the metal gasket except a region surrounding the cooling water opening, and removing the surface treatment agent in the region by jetting superhigh pressure water at the region.

REFERENCES:
patent: 4290819 (1981-09-01), Cornwall et al.
patent: 4434984 (1984-03-01), Beyer et al.
patent: 4659410 (1987-04-01), McDowell et al.

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