Resilient packing ring and assembly

Details Resilient packing ring and assembly Resilient packing ring and assembly

1978-02-02

1979-07-24

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

F16J 1532

Patent

active

041620798

ABSTRACT:
A packing ring of resilient material for down hole sealing of oil well casing against high fluid pressure. The ring is in the general form of a U cup with inner and outer lips. The outer lip is relatively thick and has an outer corner rounded to a large radius that merges with a concave radius on the radially outer surface of the lip to more easily pass over projections and imperfections in surfaces to be sealed by the lip. The inner corner of the outer lip is also rounded to facilitate entry of fluid between the lips for pressing the lips into sealing contact with the surfaces to be sealed. The invention includes the assembly of the packing ring with a sleeve or other part upon which the ring is mounted, the ring being bonded to such part and having a large radius at one end where it is bonded so as to make the bond more secure.

REFERENCES:
patent: 3189359 (1965-06-01), Haberkorn
patent: 3199831 (1964-08-01), Sully
patent: 3806137 (1974-04-01), Prasse
patent: 3892418 (1975-07-01), Felt

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