Sealing ring

Details Sealing ring Sealing ring

1996-03-08

1997-07-01

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277153, 277215, 277152, F16J 1532

Patent

active

056428898

ABSTRACT:
A sealing ring inserted into the radial space between two relatively movable cylindrical surfaces of a first and a second machine part. The cylindrical surfaces surround one another coaxially, and the sealing ring includes a first device for statically stationary fixing and sealing of the first machine part, as well as a second device for movable sealing of the second machine part. The first device is formed by a retaining ring made of a polymeric material pierced by at least one relief groove and engaging the first machine part, as well as an annular lip seal situated in front of the relief groove which is acted upon by the pressure of the medium to be sealed. The lip seal elastically deforms above a preselected minimum pressure differential and disengages from the first machine part. The lip seal, under radial prestressing, is in contact with the first cylindrical surface during normal use of the sealing ring and elastically deforms in the radial direction only when the minimum pressure differential is exceeded.

REFERENCES:
patent: 3021161 (1962-02-01), Rhoads et al.
patent: 4643436 (1987-02-01), Jackowski
patent: 4867926 (1989-09-01), Matsushima
patent: 5127661 (1992-07-01), Franson et al.

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