Radial seal rings

Details Radial seal rings Radial seal rings

1986-07-18

1991-02-26

Shoap, Allan N.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277152, F16J 1532

Patent

active

049956213

ABSTRACT:
A radial seal ring has a frame or reinforcement, a body of an elastomer, and a seal lip of a low friction material such as a fluorine containing resin, particularly PTFE, adhered to the body. The seal lip extends radially of the body to provide a portion unadhered to the body and which has an annular recess in the surface thereof which faces toward the body. The recess is located adjacent to a peripheral edge of the body and defines a controlled region of deflection of the lip seal. The annular recess is formed during molding by pinching a preformed disc of the lip seal between an annular rib of the mold and an opposed surface of the mold.

REFERENCES:
patent: 2476324 (1949-07-01), Reich
patent: 2583085 (1952-01-01), Campbell
patent: 3356376 (1967-12-01), Bradfute et al.
patent: 4125266 (1978-11-01), Schonherr

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