... CR, NBR, NR,silicone rubber;hardness: shore A 30-90;Application: automotive, industrial, medical, agricultural,etc;molding: compression, injection, transfer;Different colors ... company also specialized in producing industrial silicone rubber products, such as rubber gasket, o-ring, silicone keypad,rubber pipe, rubber stopper, ... website www.gooodol.com or email us directly Molded Silicone rubber gasket