... red 2) RoHS directive compliant green products3) Available materials: silicone, fluoro silicone, viton(FKM), neoprene, HNBR, NBR+PVC, NBR, natural rubber, SBR ... , IR, IIR(butyl rubber), CR (neoprene), ... ' designs and specifications are acceptedPacking:500pcs/bag molding silicone rubber seals