Multi-layer lip seal assembly

Details Multi-layer lip seal assembly Multi-layer lip seal assembly

1988-11-25

1991-08-13

Shoap, Allan N.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 47, 277 48, 277152, 277184, B65D 5300, F02F 500, F16J 906

Patent

active

050391127

ABSTRACT:
A multi-layer radial lip seal assembly adapted to be retained to the housing of an automotive air conditioning compressor and to be disposed about a rotatable shaft extending through a chamber provided in the housing. The lip seal assembly includes a first seal member or disc of virgin FEP adjacent to a second seal member or disc of graphite-filled PTFE. A retainer is provided to support the first and second seal members and an elastomer is molded to the retainer and seals the seal members to the retainer. The first seal member acts to protect the second seal member during installation and quickly wears away, so that the second seal member becomes the primary seal member.

REFERENCES:
patent: 3275331 (1966-09-01), Mastrobattista et al.
patent: 3549445 (1970-12-01), McMahn
patent: 3938813 (1976-02-01), Forch
patent: 4119324 (1978-10-01), Denton et al.
patent: 4159298 (1979-06-01), Bainard
patent: 4664392 (1987-05-01), Hatch
patent: 4721314 (1988-01-01), Kanayama et al.

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