Unitized oil seal and method of making a unitized oil seal

Details Unitized oil seal and method of making a unitized oil seal Unitized oil seal and method of making a unitized oil seal

1989-02-13

1991-06-18

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

29434, 29469, 29509, 156294, 277152, 384486, F16J 1532

Patent

active

050243640

ABSTRACT:
A unitized oil seal having an annular inner seal case (12) having a J-shaped cross section formed by an inner wall (24) and a first axial flange (28) interconnected by a first radial flange (26). The oil seal also has an annular outer seal case (14) having a J-shaped cross-section formed by an outer wall (40) which is connected to a second axial flange (44) by a second radial flange (42). A primary seal element (16) is secured to the second axial flange (44) and extends to the outwardly facing surface (54) of the inner wall (24). An auxiliary seal element (18) is secured to the first axial flange (28) and extends to the inwardly facing surface (38) of the outer wall (40). In one embodiment, the primary and auxiliary seal elements (16) and (18) may be cammed over radially extending lips (56) and (58) formed on the inner and outer walls (24) and (40). Separation of the inner and outer seal cases (14) and (16) is resisted by radial pressure exerted by the seal elements and the radial lips.

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