Rubberized Cork Gasket Material
Not to be confused with composition cork, rubberized cork gasket material is made by combining natural cork with a synthetic rubber. While neoprene and nitrile (NBR) are the most common materials for blending, it can also be mixed with EPDM, silicon, Viton and Hypalon.
Rubberized Cork Gasket Material Specifications:
Thickness: 1/32” to ¼”
Width: 48” rolls; sheets cut to spec
Max Temperature: 250°F
Rubberized cork gasket material combines the benefits of cork – excellent compressibility, fire resistance and low cost – with those of synthetic rubber. Thus cork gasket material is flexible and compressible with good tensile strength and resistance to a range of oils. (The specific chemical resistance depends on the type of rubber used.) The maximum recommended temperature for cork and rubber is 250 °F.
Good applications are those with low limits on bolt torque and the pressure that can be applied. Think oil pan and valve cover gaskets rather than heavy pipe flanges. This is where the high compressibility and good recovery of cork provides benefits. And for even lower closing effort, consider rubberized cork gasket material made with sponge rather than solid rubber. Other places to use this material are doors on electrical panels, inspection ports and industrial lids.
Rubberized cork gasket material is produced in thicknesses from 1/32” to ¼” and is available in rolls 48” wide. (Larger sizes may be available on request.) Sheets of cork gasket material cut to your specifications.