Patent ID: 7968167
Filing Date: 2011-06-28
Classification: F02M,F16J,Y10T

Abstract:
1. A coated seal for sealing parts in a vehicle engine, the seal comprising: a seal body portion including glass fiber-filled polytetrafluoroethylene, carbon-filled polytetrafluoroethylene, molybdenum disulfide-filled polytetrafluoroethylene, bronze-filled polytetrafluoroethylene or combinations thereof; and a coating portion adhered to at least one side of the seal body portion, the coating portion forming from about 5 vol % to about 25 vol % of the coated seal, the coating portion including expanded polytetrafluoroethylene, carbon-filled polytetrafluoroethylene, or combinations thereof, the coating portion having a coefficient of friction of less than 0.25 when subjected to a pressure of about 100 MPa for a travel distance of at least 380 meters at a sliding speed of 0.2 meters/second.