... ,Silicon,FPM, 3.top-quality and competitive price. rear crankshaft oil seal : 1.Material:NBR,HNBR,PTEE,FPM,MVQ,EPDM,SILICONE ... , VITON,PU,CR,Neoprene, etc2. types of Rubber Oil Seal: TC, TB, TA, SC, SB, SA, VC, VB, VA ... , acid-alkali resistant, ozone resistant,aging resistant, weather resistant, good insulation property, anti-toxic, good air-permeable, etc.4.Production Control ...