... , NBR O SGS Silicone O-RingO-Ring:1. Several material f or Oil Seal, O-Ring and rubber gasket like: NBR, HNBR, ... . 5. Optional color for you of the Oil Seal, O-Ring and rubber gasket: Black, red, yellow, brown, white, green, violet ... , Rubber ring, Sealing ring, Sealing gasket. Details:1.Material: silicone rubber2.Features: high and low temperature resistance, weather resistance, high and low pressure ...