Face seal means with back-up seal

Details Face seal means with back-up seal Face seal means with back-up seal

1982-12-20

1984-10-16

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 88, 277 93SD, 277173, F16J 1536, F16J 1538

Patent

active

044770880

ABSTRACT:
In a twin spool gas turbine engine, a bellows serves to bias a carbon seal against its seal plate and a piston ring back-up seal spaced radially outward and axially from the carbon seal provides a controlled leak path in the event the bellows fails.

REFERENCES:
patent: 2222654 (1940-11-01), Donaldson
patent: 2586739 (1952-02-01), Summers
patent: 2727765 (1955-12-01), Kilpatrick
patent: 3288474 (1966-11-01), Gits

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