Mechanical face seals

Details Mechanical face seals Mechanical face seals

1993-06-24

1994-12-27

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 81R, F16J 1534

Patent

active

053758552

ABSTRACT:
A mechanical face seal includes a first sealing ring mounted non-rotatably and sealed with respect to a shaft and a second sealing ring mounted non-rotatably and sealed with respect to a housing, the second sealing ring being mounted in axial alignment with the first sealing ring and springs being provided to urge sealing faces of the first and second sealing rings into sealing engagement. The sealing face of the first sealing ring is provided with a plurality of grooved areas spaced angularly around its circumference, the grooved areas opening to one edge of the sealing face, a continuous annular dam formation being provided between the grooved areas and the other edge of the sealing face. Each grooved area defines at least two trailing edges relative to rotation in one direction and at least one trailing edge relative to rotation in the opposite direction, the trailing edges being defined by walls of the grooved area inclined in the plane of the face at an obtuse angle to said opposite direction of rotation, the trailing edges relative to each direction of rotation each being terminated by a transverse wall extending circumferentially of the seal face.

REFERENCES:
patent: 4212475 (1980-07-01), Sedy
patent: 4733873 (1988-03-01), Takenaka et al.
patent: 4889348 (1989-12-01), Amundson et al.
patent: 5090712 (1992-02-01), Pecht et al.
patent: 5201531 (1993-04-01), Lai

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