Water pump seal and method

Details Water pump seal and method Water pump seal and method

F - Mech Eng,Light,Heat,Weapons

16

J

277/39

F16J 15/32 (2006.01)

Patent

CA 1126777

ABSTRACT OF THE DISCLOSURE An annular shaft seal and method for sealing the shaft of a water pump used with coolants containing anti- corrosion compounds that can precipitate out as particles that can cause wear of a shaft and seal. The shaft seal of this invention has a primary sealing element and a unique auxiliary sealing element. The unique auxiliary sealing element has a large lip contact width and is located axially inwardly of the primary sealing element for causing the anti-corrosion compounds to precipitate out at a lo- cation axially inwardly from the primary sealing element and over a larger then normal area thus reducing shaft wear due to lower unit loading, The seal also includes means for preventing the precipitated-out particles from reaching the shaft-contacting lip of the primary sealing element.

316459

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