... material:NR,NBR,SBR,EPDM,CR.silicone,viton rubber sheet . natural rubber sheets material:NR,NBR,SBR,EPDM,CR.silicone,viton rubber sheet . Performance: resistance ... layer two. From the rubber by rolling (extrusion), synthetic paste, flat drum vulcanizer vulcanizer sulfide or sulfide and made a row. EPDM rubber sheets