Self aligning spiral groove face seal

Details Self aligning spiral groove face seal Self aligning spiral groove face seal

1979-01-15

1980-07-15

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 91, 277 93SD, 277 27, F16J 1534, F16J 1542

Patent

active

042124751

ABSTRACT:
A self aligning, spiral groove, gas seal having a primary sealing ring and a mating sealing ring with opposed radially extending sealing faces, one of said rings having:
(a) Spiral grooves extending inwardly from the outside diameter of the face of one of said rings, said grooves having a depth of between approximately 0.0001 and 0.0003 inches, said grooves extending across the face of said ring to provide a dam width ratio of between approximately 0.5 and 0.8 according to the formula ##EQU1## where GD is the diameter of a circle defined by the boundary of the grooved area and the ungrooved area in said face, ID is the internal diameter and OD is the outside diameter; and
(b) Said ring has a balance of between 0.8 and 0.9 according to the formula ##EQU2## where OD is the outside diameter of the sealing interface, ID is the internal diameter and BD is the balance diameter.

REFERENCES:
patent: 3109658 (1963-11-01), Barrett et al.
patent: 3184244 (1965-05-01), Van Fleet
patent: 3499653 (1970-03-01), Gardner
patent: 3527465 (1970-09-01), Guinard
patent: 3704019 (1972-11-01), McHugh
patent: 3776560 (1973-12-01), Wentworth
patent: 3782737 (1974-01-01), Ludwig et al.
patent: 3804424 (1974-04-01), Gardner
patent: 3894741 (1975-07-01), McHugh
patent: 4099729 (1978-07-01), Nylykke
patent: 4114900 (1978-09-01), Wiese

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