04212475 is referenced by 92 patents and cites 11 patents.

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.

Title
Self aligning spiral groove face seal
Application Number
6/3251
Publication Number
4212475
Application Date
January 15, 1979
Publication Date
July 15, 1980
Inventor
Josef Sedy
Glenview
IL, US
Agent
Haight Hofeldt Davis & Jambor
Assignee
Crane Packing Co
IL, US
IPC
F16J 15/42
F16J 15/34
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