Made from high quality blown nitrile rubber over an aluminum core. Nitrile rubber on both sides of the gasket provides excellent temperature resistance, compression, and torque retention. The aluminum core prevents the gasket from squeezing out under compression.
The nitrile rubber is black and the aluminum core is dull silver so that the edge of the gasket matches well with engine cases and covers.
Do not use sealants on AFM gaskets. The nitrile rubber provides the proper seal and in many cases allows the gasket to be reused if disassembly is necessary.
Made in the USA with materials from the USA.