Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1977-06-16
1978-09-26
Ward, Jr., Robert S.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277124, 277180, 277235R, 277DIG6, F16J 1500, F16L 2104
Patent
active
041164512
ABSTRACT:
A seal is disclosed for use in high ambient temperatures. The seal includes a plurality of V-shaped seal rings having opposite convex and concave sides that are stacked or rested in the annular space provided between a shaft and a housing through which the shaft extends. Each seal ring includes an annular body of self-lubricating, low-friction graphite, which is a very good conductor of heat. The outer and inner edges of the annular body of graphite are moved into sealing engagement with the shaft and housing when the annular body is subjected to a differential pressure. A ring of spring metal that is V-shaped in cross-section is embedded in the annular body of graphite to support the annular body of low-friction material and hold it in position to form a seal between the shaft and the housing against the differential pressure exerted across the seal. One edge of the ring of spring metal engages the housing to provide a frictional force that resists relative movement between the seal ring and the housing and also to conduct heat from the seal directly through the spring metal into the housing in which the seal is located.
REFERENCES:
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patent: 3841289 (1974-10-01), Meyers
Matson, Jr. Lawrence W.
Nixon Jeddy D.
Maurer Engineering Inc.
Thompson Jennings B.
Ward, Jr. Robert S.
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