silicone o rings 1) Quick supply 2) Stringent quality checks 3) Reasonable- ... in producing for more than 20 years,The main production silicone rubber products, rubber products (NBR, EPDM, SBR, etc.) which ... at home and abroad.Our main products lines include O-Rings, packing, rubber cord, rubber hose and various other products ... contact us.we will do our best to satify you. silicone o rings OD 65mm*4mm