Annular seal

Details Annular seal Annular seal

1990-08-29

1991-09-03

Shoap, Allan N.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277133, 277153, F16J 1554

Patent

active

050446428

ABSTRACT:
An annular seal in which a sealing lip of polymeric material is urged under resilient bias against a cylindrical surface of a shaft. The cylindrical surface is provided with saucer-like indentations. The maximum depth of the indentations amounts to 4 to 12 micrometers, and each indentation is surrounded on its entire periphery by adjacent indentations. The distance between centers of the indentations is so small that the adjacent indentations merge with one another to form arrises.

REFERENCES:
patent: 2577818 (1951-12-01), Shaw
patent: 3572730 (1971-03-01), Otto
patent: 3586340 (1971-06-01), Otto
patent: 4441349 (1984-04-01), Symons
patent: 4568092 (1986-02-01), Hayashida et al.
patent: 4573690 (1986-03-01), DeHart et al.

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