1) Material: silicone, neoprene, nitrile, EPDM, SBR, Viton, HNBR, NR 2) Durometer: 45-90 shore A Neoprene Gasket, Rubber Gasket, Rubber Washer:1) Material: silicone, neoprene, nitrile, EPDM, SBR, Viton, HNBR, NR2) Durometer: 45-90 shore A3) Dimensions: 3mm to 300mm4) Made according to customers' specifications5) Two production way: molding, extrusion/cut