... 2)Different colors and sizes 3)Certification:Rosh,CE,PAHS flat rubber gaskets 1)We have kinds of material : NBR,HNBR ... nonstandardBrand Namerubber GasketMaterialNBR,HNBR,EPDM,SILICONE,VITON,FLS,FFPM,PTFETemperatureCommon: 20~50degree centigrade;NBR(-40~120C),ACM(-30~180C),VITON(-25 ...