... 2)For automobile,motorcycle,trucks, 3)OEM /sample serviceValve oil seal Applications : automobile , motocycles , agricultural machinery , trucks , buses , ... trailers and exercise equipments.1)Oil Seal 's material :NBR,HNBR,EPDM,ACM,Silicone,Viton(FKM),Rubber ... to manufacture oil seal.3)All sorts of medium resistance ,aging resistance4)OEM &sample service.5)ISO9001:2000 Certificate + ...