Material:rubber(NR,SR,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 ... Outstanding resistance to damage caused by flexing and twisting rubber gasket