1.white silicone rubber material 2.excellent sealing effect 3.good mechanical properties 4.factory price offered Features of white slicone seal rings:1.Smooth surface, no needle, no flash, the precision of + / - 0.03 mm to + / - 0.08 mm.2.Products used in automotive, medical treatment,pharmaceutical, sensor, valves, pumps, sanitary ware, bearings, electrical appliances, and other industries.3.Customized abnormity waterproof silicone rubber ring.4.Hardness:between 20~80 shore A5.Temperature range:-43~210°C6.Density:1.19~1.35 g/cm37.Packing details:plastic bags inside,carton boxes outside,just as per yours8.Payment terms:L/C,T/T,cash,western union9.Your drawings or samples are highly welcomed.