1,for high speed rotation 2, the seal is independent of the shaft 3, for engine driven pump and motor driven pumps this seal RM F is made by ourselves Wenzhou rimi seal manufacture co.,ltd1, this seal is used in motor 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 ...