... choice: have acrylonitrile-butadiene rubber, fluorine rubber (FKM), silicon rubber (SIL), EPDM, neoprene (CR), natural rubber (NR) hydrogenated acrylonitrile-butadiene rubber (HNBR), butyl rubber (IIR), silicon and ... fluorine rubber (FLS), etc8-low costOthers1.Packing: as ...