We are offering food grade silicone sealing ring. Made of pure silicone as silicone gaskettemperature range: -40 to 230cwith good sealing, water resistance, oil resistance, anti-aging, insulation, nontoxic, cools quickly and easy-to-cleanused in faucets, toilets, fittings, pipes, showers and other industry accessories and auto partscustomized designs, sizes and others are acceptedcustomized packing types are acceptedall manufacturing processes are strictly according to the request of iso 9001