... application in the automobile, the motorcycle engine,the gear box, the vehicles The widespread ... application in the automobile, the motorcycle engine,the gear box,the vehicles and sedan chairs, ... 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 ...