This seal is commonly used for oil, water and other weak corrosive medium Good ... and small axial size. This seal is commonly used for oil, water and other weak corrosive medium. It can ... through double compensational ring.Combination of materialsSealing faceGraphite, Silicon carbide, Tungsten carbide,Aluminum oxideSecondary sealingAcrylonitrile rubber, Fluorine rubber, Ethylene propylene rubberMetal ...