Hydrodynamic shaft seal

Details Hydrodynamic shaft seal Hydrodynamic shaft seal

F - Mech Eng,Light,Heat,Weapons

16

J

277/39

F16J 15/32 (2006.01)

Patent

CA 1135743

ABSTRACT A hydrodynamic shaft seal, for use under both static and dynamic conditions, features a sealing face having one static sealing surface at the non-liquid side of the seal, and a dynamic sealing surface having a plurality of angular vanes, forming chambers open to the liquid, at the liquid side of the seal. An annular coil spring biases the static sealing surface into contact with the shaft under static conditions, and controls its spacing under dynamic conditions during which the vanes propel liquid toward the liquid side of the seal.

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