... 5/8 3/4 5/16 rubber seal ring 1)We have kinds of material : NBR,HNBR,EPDM,SILICONE,VITON,NR,FLS ... products like O rings, rubber seals, rubber band, oil seal,water seal and rubber gaskets ect.Item nameO RINGSizeCustomized/standard and nonstandardBrand ... ,HNBR,EPDM,SILICONE,VITON,FLS,FFPM,PTFETemperatureCommon: 20~50degree centigrade;NBR(-40~120C),ACM(-30~180C),VITON(-25~300C)CertificateCE, ROHS ...