EPDM Auto Rubber Part Dust Cover Rubber Seal 1. Material: PU, Epdm 2. ... such as hydrocarbon and phosphate ester and are designed for high-pressure dynamic applications such as hydraulic cylinders. Hydraulic ... operate under lower operating speeds.3) The sealing orientation for hydraulic seals can include internal (rod seal), external ( ... MG, MG7, TC, TB, SC, SC5, Y, VR, TCN, ZF, OKC3. Product overview