Rubber O Ring 1) Material :EPDM,NR,NBR ect 2) Production: die ... parts,such as rubber injection fittings, automobile rubber parts,gasket,O-ring,rubber seals ect. Material : TPV,TPE,EPDM,NR,NBR ... control the mould and products quality.Our products are enjoying a high acceptance for the top quality ,low price and timely ...