Composite radial seal

Details Composite radial seal Composite radial seal

1992-10-13

1993-12-14

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277165, 277188R, 277205, F16J 1532

Patent

active

052695379

ABSTRACT:
A composite radial seal for sealing the rod end of a hydraulic cylinder or suspension strut is disclosed. The composite seal includes a high abrasion resistant elastomeric seal ring having an elongated body. The body has a pressure end and a non-pressure end, with the pressure end having a U-cup configuration and a first dynamic seal lip and the non-pressure end having an enclosed annular cavity and a second dynamic seal lip. The cavity contains and is filled with a highly resilient energizer ring. Seal also includes an integral anti-extrusion ring that is bonded to the non-pressure end of the seal ring body adjacent and on the non-pressure side of the second seal lip to prevent extrusion of the seal lip into a clearance gap between a rod and a head of the cylinder or strut.

REFERENCES:
patent: 2757947 (1956-08-01), Whitten
patent: 3271038 (1966-09-01), Bastow
patent: 3601419 (1971-08-01), Fern
patent: 3653670 (1972-04-01), Sifri et al.
patent: 4371177 (1983-02-01), Bahr et al.
patent: 4566702 (1986-01-01), Traub
patent: 4709932 (1987-12-01), Edlund et al.
patent: 4723782 (1988-02-01), Muller
patent: 4898081 (1990-02-01), Fecher
patent: 5205568 (1993-04-01), Stoll et al.

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