... Washer: 1.Material:copper,steel,rubber 2,Temperature:-60 to 500C 3.Standard:JIS,UNI,DIN,ASTM,GB 4.Samples free Seal Washer ... :1. Material: NBR, SILICONE, VITON,HNBR, CR, PTFE, EPDM, etc. Can choose on your requirement; 2. types of Rubber ... make on your demand; 4. Different sizes of Oil Seal,Rubber Oil Seal,Rubber Seal, also can make on your size ... days(as per your order) Combination sealing washer