nbr rubber o ring industrial o ring epdm o ring food grade,cr,epdm,viton,neoprene,nbr,NR ... ,silicone rubber;√ hardness: shore A 30-90;√ Application: automotive, industrial, medical, agricultural,etc;√ molding: compression, injection, transfer;√ Different ... company also specialized in producing industrial silicone rubber products, such as rubber gasket, o-ring, silicone keypad,rubber pipe, rubber ...