... Used in faucets, toilets, fittings, pipes, showers and other industry accessories, and auto parts Material: silicone,NBR, Viton, HNBR, ... oil resistance, anti-aging, insulation, nontoxic, tasteless, and other requirements Hardness: 30-90 shores A or IRHDProducts ... O-rings, nonstandard size ; Customized design, size, and others are accepted Process:All manufacturing processes are strictly according ...