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Skew and twist resistant hydrodynamic rotary shaft seal

United States Patent

5,873,576
February 23, 1999
View the Complete Patent at the US Patent & Trademark Office
A hydrodynamically lubricated squeeze packing type rotary shaft seal suitable for lubricant retention and environmental exclusion which incorporates one or more resilient protuberances which and cooperate with the gland walls to hold the seal straight in its installation groove in unpressurized and low pressure lubricant retention applications thereby preventing skew-induced wear caused by impingement of abrasive contaminants present in the environment, and which also serve as radial bearings to prevent tipping of the seal within its installation gland.
Dietle; Lannie (Sugar Land, TX), Kalsi; Manmohan Singh (Houston, TX)
Kalsi Engineering, Inc. (Sugar Land, TX)
08/ 927,960
September 11, 1997
This invention was made with Government support under contract DE-FG03-90ER80939 awarded by the Department of Energy. The Government has certain rights in this invention.