Seal

Details Seal Seal

1983-09-01

1985-11-19

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277205, F16J 920, F16J 1532

Patent

active

045537615

ABSTRACT:
A U ring in an inwardly radially-open groove in a relatively stationary machine part for sealing a relatively axially-displaceable machine part extending therethrough has a resilient U ring body, a radially-outside statically-acting sealing lip for bearing on the bottom of the groove, and a radially-inside dynamically-acting sealing lip for bearing on the axially-displaceable machine part. The axial spacing of the statically-acting sealing lip from the adjacent end face of the groove is greater than that of the dynamically-acting sealing lip, whereby the dynamically-acting sealing lip tilts away from the axially-movable machine part when the latter forces the end of the U ring against the end face of the groove to relieve pressure along the axially-moving machine part.

REFERENCES:
patent: 3384382 (1968-05-01), Rink
patent: 3527507 (1970-09-01), Clark
patent: 3854737 (1974-12-01), Gilliam
patent: 4417503 (1983-11-01), Izumi

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