Polytetrafluoroethylene resin composition
AssigneeNok Corporation
InventorYuhei TABUCHI
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Abstract
A polytetrafluoroethylene resin composition comprising 67 to 75 volume %, preferably 69 to 72 volume %, of a polytetrafluoroethylene resin and 33 to 25 volume %, preferably 31 to 28 volume %, of a filler having an average particle diameter of 45 to 80 μm, preferably 50 to 75 μm. The seal ring obtained from the polytetrafluoroethylene resin composition of the present invention can prevent the cut cross-sections of the seal ring abutting portion from being pressed by oil pressure and fixing to each other. Therefore, the seal ring is effectively used as an oil seal ring used as a sealing material applied to vehicle CVTs and power steering devices.
Claims10
A polytetrafluoroethylene resin composition comprising 67 to 75 volume % of a polytetrafluoroethylene resin and 33 to 25 volume % of a filler having an average particle diameter of 45 to 80 μm.
Dependencies are inferred from the claim text.