Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1981-03-27
1982-09-21
Ward, Jr., Robert S.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
2771162, 277117, 277124, 277125, 277188A, 277200, 277213, 277DIG6, F16J 1512
Patent
active
043503462
ABSTRACT:
A fire-resistant seal for maintaining sealing contact between the sealing surfaces within a packing box under high temperature differentials between the inner and the outer members of such packing box, comprising one or more graphite-component seal rings for engaging the sealing surfaces of the inner and outer members, metal seal rings above and below the graphite-component seals for preventing extrusion of the graphite-component seal rings as well as for establishing metal-to-metal sealing contact between said metal rings and the sealing surfaces of the inner and outer members, and load maintaining means in the form of a metal crushable follower of cylindrical shape, having recessed grooves along its outer and inner perimeters, the gap between said grooves being permanently narrowed to approximately half-closure after applying a predetermined make-up load greater than the rated working pressure, which enables said crushable follower to maintain such compressive load on said graphite-component seals over a predetermined load range.
REFERENCES:
patent: 1594517 (1926-08-01), Dufty
patent: 3403917 (1968-10-01), MacSpadden
patent: 3433506 (1969-03-01), Crowe
patent: 3531236 (1970-09-01), Braddick et al.
patent: 3810639 (1974-05-01), Scannell
patent: 4068853 (1978-01-01), Schnitzler
patent: 4116451 (1978-09-01), Nixon et al.
patent: 4160551 (1979-07-01), Nixon et al.
patent: 4190257 (1980-02-01), Schnitzler
Conley Ned L.
Rose David Alan
Shull William E.
Smith International Inc.
Ward, Jr. Robert S.
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