... rings 2) Various colors available, such as black, green, yellow, blue, red 2) RoHS directive compliant green products3) Available materials: silicone ... , viton(FKM), neoprene, HNBR, NBR+PVC, NBR, natural rubber, SBR, IR, IIR(butyl rubber), CR (neoprene), EPDM, SBR, AU, ACM, CO; ... /bagOur company have rich experience of produce all kinds of rubber products, especially O-rings series. We supply the best ...