natural rubber sheets 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 of oil , high heat,antnatural rubber sheetshardness:70 SHORE ... into an ordinary plastic, plastic acid, oil and plastic, heat-resistant plastic such as plastic and insulation. Its structure and layer ...