Rotary reciprocating seals with internal metal band

Details Rotary reciprocating seals with internal metal band Rotary reciprocating seals with internal metal band

1997-12-12

1999-11-16

Knight, Anthony

Seal for a joint or juncture

Seal between relatively movable parts

Circumferential contact seal for other than piston

277570, 277647, 277651, F16J 1532

Patent

active

059843160

ABSTRACT:
A seal assembly is provided for static, rotary and reciprocating sealing between the shaft and the housing. The seal assembly includes a ring seal in the shape of an annulus having a body portion with an inside flange and an outside flange extending longitudinally therefrom. A spring is disposed between the flanges for radially biasing the flanges from one another to effect sealing between the shaft and the housing and a circular band disposed between the spring and the outside flange is provided for maintaining radial force against the outside flange to retain the ring within the housing and provide static sealing between the ring seal and the housing despite shrinkage of the fluoropolymer seal ring.

REFERENCES:
patent: 2635907 (1953-04-01), Heimbuch
patent: 4108447 (1978-08-01), Scholin
patent: 4655462 (1987-04-01), Balsells
patent: 5265890 (1993-11-01), Balsells

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