silicone rubber NBR seals o ring 1.low price,high ... long use 3.many sizes 4.fast ship silicone rubber NBR seals o ringFDA silicone o ring1)We have kinds of material : ... HNBR,EPDM,SILICONE,VITON,TemperatureCommon: 20~50degree centigrade;NBR(-40~120C),ACM(-30~180C),VITON(-25~300C)CertificateCan pass CE, ROHS,, ... lead time5-7 daysCarton Size38*48*58cmOEM/ODMwelcome silicone rubber NBR seals o ring