Seal assembly with improved low pressure sealing ring

Details Seal assembly with improved low pressure sealing ring Seal assembly with improved low pressure sealing ring

1985-03-18

1986-01-28

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277188A, 277194, 277205, 277152, F16J 1524, F16J 1532

Patent

active

045667020

ABSTRACT:
An improved low pressure seal ring configuration which is adapted for use in combination with a high pressure seal ring to provide a seal assembly which is capable of sealing first and second relatively reciprocating surfaces at both high and low pressures. The low pressure seal ring is designed to be located between the high pressure seal ring and the wall of the groove in which the seal assembly is mounted. The low pressure seal ring exerts pressure against the high pressure seal to provide desired high pressure sealing. The low pressure seal also includes a seal lip which has a tip that extends over the edge of the high pressure seal to provide low pressure sealing. The low pressure seal assembly includes a seal body portion in which the radial width of the cross section of the seal body increases away from the sealing tip to provide increased biasing force against the high pressure seal ring and to provide adequate force against the tip of the low pressure seal ring to provide low pressure sealing without causing excessive frictional wear of the sealing tip.

REFERENCES:
patent: 2998987 (1961-09-01), Taschenberg et al.
patent: 4143586 (1979-03-01), Zitting
patent: 4231578 (1980-11-01), Traub
patent: 4268045 (1981-05-01), Traub
patent: 4421330 (1983-12-01), Burke

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