Seal assembly with reduced wear low pressure sealing ring

Details Seal assembly with reduced wear low pressure sealing ring Seal assembly with reduced wear low pressure sealing ring

1985-05-15

1986-02-18

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277176, 277177, 277194, 277205, 277188A, F16J 1524, F16J 1532

Patent

active

045709440

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 pressured 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 lip includes a bottom surface which is V-shaped and terminates in an apex. The outer portion of the seal lip includes an annular lobe having a second annular apex. The seal lip is designed to provide increased localized annular sealing pressures due to the apexes along with reduced lateral movement of the seal lip during seal assembly use in order to reduce abrasion and wear of the seal lip.

REFERENCES:
patent: 3718338 (1973-02-01), Traub
patent: 3765690 (1973-10-01), Sievenpiper
patent: 3848880 (1974-11-01), Tanner
patent: 4027816 (1977-06-01), Slator et al.
patent: 4053163 (1977-10-01), Vegella
patent: 4053166 (1977-10-01), Domkowski
patent: 4231578 (1980-11-01), Traub
patent: 4268045 (1981-05-01), Traub

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