Shaft seal

Details Shaft seal Shaft seal

1992-06-09

1994-06-21

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277134, 277174, F16J 15447

Patent

active

053222989

ABSTRACT:
A shaft seal element (20) for use around a rotatable shaft (10) has an annular sealing surface (22) facing a radially adjacent surface of the shaft or housing. This sealing surface (22) can comprise two outer annular lands (26, 27) with an inner land (28) therebetween. A relief groove (29, 30) separates the inner land (28) from each outer land (26, 27). A plurality of fluid redirecting grooves (40) are obliquely formed across the inner land (28). A protruding ridge (44) is formed at the trailing edge (40b) of each redirecting groove (40). The ridges (44) and redirecting grooves (40) inhibit fluid migration across the sealing surface (22) and divert a portion of the fluid towards the high pressure end of the seal element.

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