Replacement Gaskets, Seals, and O-Rings for Big Twin, Big Twin Transmission, and XL/XR models.





Rubber-Covered Metal (RCM)

The James Gaskets Rubber-Covered Metal line of gaskets are made from a solid steel sheet coated on two sides with a high-temperature elastomer. Strategically placed elastomer beading helps insure a positive seal while our clear silicone conformal coating fills in minor imperfections in the flanges and provides for easy release upon removal. They have excellent torque retention properties and will not extrude under high torque load.





Foamet® Expanded Rubber Gaskets

Our Foamet® product line features an aluminum core coated on two sides with expanded nitrile rubber, then coated with a silicone release coating to insure a positive seal with excellent release characteristic upon disassembly. Available in beaded and non-beaded construction depending on the application.





MicroPore® Paper Gaskets

The James Gasket flexible paper gasket product line utilizes the latest in gasket paper technology called MicroPore . These gaskets exhibit exceptional fluid resistance and sealability in a wide range of applications and flange conditions. With a reduced pore size, this material is very resistant to wicking or fluid migration through the material and capable of handling operating temperatures in excess of 500 degrees.





Expanded Metal Core Head Gaskets

Our expanded metal core head gaskets are made from top-quality graphite-coated high-temperature fiber material chemically and mechanically fused to an expanded metal core. They provide excellent sealing performance, load retention, and structural strength and provide a clean release upon removal. The stainless steel armor protects the cylinder bore from the hot combustion gasses and provides a positive seal at the combustion chamber.