Rotary shaft sealing device

Details Rotary shaft sealing device Rotary shaft sealing device

F - Mech Eng,Light,Heat,Weapons

16

J

F16J 15/34 (2006.01)

Patent

CA 2071221

2071221 9207207 PCTABS00012 A dry face seal (10) for preventing leakage around a rotary shaft (60) extending through a structural casing comprises an annular stationary rigid seal (26) and a rotary seal (20). The stationary seal, secured to the structural casing for surrounding the rotary shaft, has a smooth sealing surface for establishing a dry face seal. The resilient rotary seal means is adapted to be secured to the rotary shaft and has an annular projecting edge means (75) for containing the smooth sealing surface under a biased pressure to form a dry face seal in conjunction therewith. The resilient rotary seal means comprises a carbon filled thermally resistant polymer composition having a durometer hardness of from about 85 to about 91, and preferably comprises a fluorocarbon filled with finely divided carbon black.

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