Rubber o ring 1.Material:Rubber 2.Color:Black,White 3.competitive price 4.OEM is welcome Rubber o ring1.Materials advice: rubber (EPDM ... +/-3 shore A tolerance.8.Excellent chemical and physical property, high/low temperature resistance, oil and fuel, water, weathering and Ozone ... bag inside, strength carton outside, or as your request. Rubber o ring KSH0706