Patent ID: 6533540
Filing Date: 2003-03-18
Classification: F04D

Abstract:
A multi-seal shaft-sealing system for sealing the shaft-drive connection between a shaft-driven pump and driving motor, comprising:a first seal mounted in a body wall of the pump for effecting a sealing relationship with a rotatable drive shaft extending therethrough, the body wall of the pump having a boss thereon, said boss having threads thereon, a containment cup mountable in sealing engagement with the body wall of the pump and having a second seal axially spaced from the first seal on the drive shaft, the containment cup defining a containment volume between said first and second seals, said containment cup having a portion thereof with threads thereon complementary to the threads on said boss for effecting threaded engagement thereon to connect the containment cup to the body wall of the pump and thereby define the containment volume, and an oil or oil-like fluid in the containment volume to minimize weepage through the seals and the containment volume.