Sealing device

Details Sealing device Sealing device

1995-10-30

1997-10-21

DePumpo, Daniel G.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277152, 277188A, F16J 1500

Patent

active

056788282

ABSTRACT:
A sealing device comprises an annular first seal member composed of a rubber-like elastic member and a metal ring member for reinforcement and an annular second seal member composed of a sliding member formed of a resin material and a rubber-like elastic member. The first seal member is provided with a seal lip extending towards a fluid side to be sealed and slidably contacting, in a sealed manner, an objective rotational shaft which is slidable relative to the seal lip, and the first seal member is also with provided an annular recessed portion, formed to an end surface of the first seal member on a side opposite to the fluid side, to which the second seal member is fitted. The second seal member has an endless shape. An outer peripheral portion of the elastic member of the second seal member is engaged with an inner peripheral wall of the annular recessed portion of the first seal member, and the sliding member of the second seal member slidably contact, in a sealed manner, the rotational shaft.

REFERENCES:
patent: 3495843 (1970-02-01), Andersen et al.
patent: 4300778 (1981-11-01), Gagne
patent: 4566702 (1986-01-01), Traub
patent: 5326112 (1994-07-01), Paykin
patent: 5380016 (1995-01-01), Reinsma et al.
patent: 5509666 (1996-04-01), Abraham et al.

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