Hermetic seal

Details Hermetic seal Hermetic seal

1979-11-19

1981-04-14

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277235R, F16J 1512, F16J 1532

Patent

active

042615844

ABSTRACT:
A hermetic seal is provided between opposing surfaces of a two part housing containing highly permeable fluids. A three element seal, located between the surfaces to be sealed, consists of a spring metal C-ring having a ductile metal coating on at least the surfaces thereof which are to contact the surfaces to be sealed, and an organic material coating applied at least to the ductile metal coated surfaces which contact the surfaces to be sealed. Pressure is applied to the coated C-ring by the surfaces to be sealed causing the organic material to fill any microvoids or scratches in the sealing surfaces, and causing the ductile metal coating to fill the larger voids and discrepancies, thereby, forming an impermeable leakage barrier for the highly permeable fluids contained within the housing.

REFERENCES:
patent: 3163431 (1964-12-01), Tanner
patent: 3519278 (1970-07-01), Fuhrmann et al.
patent: 3740062 (1973-06-01), Robins

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