Our company is a private enterprise specialized in producing and developing rubber airproof pieces. we use Nitrile, Silicone, Viton, EPDM, HNBR, Neoprene CR, BR, HR, SBR, Teflon, and other special rubber materials to produce O-rings and other plastics parts. we own an independent rubber laboratory supporting our production line to produce high-tech and economic rubber products or plastics parts. we provide large a variety of Hardware Assortment, O-ring kits, oil seals and ***** necessary we would design mould to produce large amount of production according to your willings and requirements. To view all the products, please visit us website. We also make production according to customer’s request and demand when necessary.please contact me without any hesitation.