Mechanical seal having centering means

Details Mechanical seal having centering means Mechanical seal having centering means

F - Mech Eng,Light,Heat,Weapons

16

J

277/20.5

F16J 15/34 (2006.01)

Patent

CA 1285299

ABSTRACT OF THE DISCLOSURE The disclosed mechanical seal is for use between a housing and a rotatable shaft supported by the housing, and has adjacent annular primary and mating sealing rings, each ring having a generally radial sealing face. Means seals and holds the first sealing ring nonrotatably relative to the housing, and means seals and holds the second sealing ring to rotate with the shaft. One sealing ring is movable axially of the shaft, and springs urge this one ring toward the other sealing ring, which is axially fixed relative to the shaft. The axially moveable seal ring is centered coaxially with respect to the axis of the seal ring through engagement of a centering element which is centered relative to the shaft and which engages the axially moveable sealing ring to center it relative to the shaft. The centering element engages the axially moveable sealing ring to effect such centering at the periphery of the axially moveable ring exposed to the pressurized fluid to be sealed.

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