Seal Washer: 1.Material:copper,steel,rubber 2,Temperature:-60 to ... .Standard:JIS,UNI,DIN,ASTM,GB 4.Samples free Seal Washer :1. Material: NBR, SILICONE, VITON,HNBR, CR, PTFE, EPDM, ... , O-Ring, Rubber Seal, Rubber Gasket, Rubber Ring, Sealing Ring, Sealing Gasket.Our rubber and PTFE seals: 1.Applications:Automobile, trucks ... demands10.Delivery:15 working days(as per your order) Combination sealing washer