... : Used in faucets, toilets, fittings, pipes, showers and other industry accessories, and auto parts Material: silicone,NBR, Viton, HNBR, EPDM ... resistance, oil resistance, anti-aging, insulation, nontoxic, tasteless, and other requirements Hardness: 30-90 shores A or IRHDProducts series ... more than 4000 molds to o rings, washers and molded parts, and more than 20 new molds every month. rubber ...