... rotation 2, the seal is independent of the shaft 3, for engine driven pump and motor driven pumps this seal RM ... engine, it is a motor shaft seal2, long life and easy assembly3, ISO9001 Certifacate passed4, materials: carbon,ceramic, NBR,SUS3045, it ... can replace EH790 seal, the mechanical seal is suitable for high speed rotationthese seals are incorporated in automotive water pumps ...