silicone o-rings 1.material:NBR,NR,SILICON,FKM,PTFE,EPDM, ... -Ring and rubber gasket like: NBR, HNBR, CR, PDFE, EPDM, SILICONE, VITONE, etc. Can choose on your requirement; 2. Many types ... , TA, SC, SB, SA, VC, VB, VA, KC, KB, KA, DC, DB etc, also can make on your demand; 3. Many ... , Rubber seal, Rubber gasket, Rubber ring, Sealing ring, Sealing gasket. silicone O-rings