... ,FKM,IIR,NBR,SBR,EPDM,CR,PU etc.) Good function Customized shape 1: Material:rubber, include NR,SR,FKM,IIR,NBR,SBR ... ,EPDM,CR,PU etc.2: Match with our main products :customized bolt ,widely applied in machinery parts3: Good function of attenuating ...