Fire-safe seal for swivel joint

Details Fire-safe seal for swivel joint Fire-safe seal for swivel joint

1983-08-15

1984-12-25

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277175, F16J 1512, F16J 1518

Patent

active

044899530

ABSTRACT:
A fire-safe seal for use in a swivel joint in a pressurized fluid system subject to fire risk, the seal having both a metal anti-extrusion ring and an annular resilient non-metallic seal member to provide essentially zero fluid linkage at normal operating temperatures, and the anti-extrusion ring to provide an extremely low rate of leakage in the event high temperature should destroy the resilient seal member. A curved spring or other metal anti-cocking device biases the anti-extrusion ring tightly against the junction of a male and a female joint to ensure that the ring remains in position after the resilient seal member is destroyed to prevent leakage through the junction.

REFERENCES:
patent: 2321791 (1943-06-01), Beardsley
patent: 2330197 (1943-09-01), Allen
patent: 2509091 (1950-05-01), Faccou

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