Mechanical seals

Details Mechanical seals Mechanical seals

F - Mech Eng,Light,Heat,Weapons

16

J

277/20.4

F16J 15/48 (2006.01) F16J 15/00 (2006.01) F16J 15/34 (2006.01)

Patent

CA 1216606

ABSTRACT "Improvements in Mechanical Seals" A mechanical seal for a shaft (10) exiting a housing (12) has an end plate (22) secured to the housing and a sleeve (26) secured to the shaft. The sleeve (26) carries a rotary seal element (40) and the end plate a stationary seal element (52) which form a running seal at faces (48,50). A multipurpose bush (60) is a close fit on the sleeve (26), it positions a spring (64) pressing the seal elements (40,52) together, it carries a lipseal (78) and it prevents collar (30) securing the sleeve (26) to the shaft (10) from contacting the end plate (22) in the event that the sleeve becomes unsecured from the shaft (10). The bush (60) is constructed from spark resistant material. A removable key 88 positions the sleeve (26), and hence the seal elements (40,52) and bush (60) with respect to the end plate (22) prior to tightening sleeve-security screws (32).

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