Air damper with graphite coated lip seal

Details Air damper with graphite coated lip seal Air damper with graphite coated lip seal

F - Mech Eng,Light,Heat,Weapons

16

F

F16F 9/36 (2006.01) F16F 9/02 (2006.01) F16J 15/16 (2006.01) F16J 15/32 (2006.01)

Patent

CA 2351949

The air damper includes a piston reciprocating within a cylindrical housing. The piston includes a lip seal which is made of rubber or thermoplastic elastomer impregnated with a minimum of 3% molybdenum/seal part weight, or a minimum of 2% polytetrafluoroethylene or silicone/seal part weight or a minimum of 1% wax/seal part weight. The lip seal is coated with a minimum of 0.5% / seal part weight graphite powder/molybdenum disulfide. The housing is made with a minimum of 2% silicone impregnated thermoplastic or a minimum of 2% moly sulfide impregnated thermoplastic. This provides for increased smoothness of operation of the air damper, particularly at low speeds.

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