Available material: materials for silicone, NBR, fluorosilicone,
viton (FKM), viton DuPont & Dow elastomers, neoprene,
HNBR, NBR+PVC, natural rubber, SBR, IR, IIR(butyl rubber),
CR (neoprene), SBR, AU, ACM, CO, etc. NSF-61 approved
material, meets drinking water system requirements