... : materials for silicone, fluoro silicone, viton (FKM), neoprene,HNBR, NBR+PVC, NBR, natural rubber, SBR, IR, IIR(butyl rubber), CR (neoprene ... NSF-61 system 3) Excellent chemical and physical property4) Advanced production line 6) Color and shape can be changed upon request 7 ...