... , the wheel hub and so on, preventedthe internal the lubricating oil divulges and the exterior water, the dustenters. Pattern: SA, SB ... , SC, SF, SG, SM, SZ, TA, TB, TC, TG, TM, TZ, VA, VB,VC, VF, VG, VM,VZ ... and the material qualityaccording to the customers'. Auto & Moto shaft oil seals(o ring ,rubber seal,auto parts)