... silicone rubber bottle stopper Feature:1)We have kinds of material : NBR,HNBR,EPDM,SILICONE,VITON,NR,FLS,FFPM,PU,PTFE etc.2)High temperature ... /standard and nonstandardBrand NameJIAXINMaterialNBR,HNBR,EPDM,SILICONE,VITON,FLS,FFPM,PTFETemperatureCommon: 20~50degree ... resistant; heat resistant; abrasion-resistant;aging resistant; insulation; acid and alkaline resistant; airtight; shock ...