1) 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 requirements2) All manufacturing processes confirm to the ISO-9001,     ISO14001 and NSF-61 standards  3) Excellent chemical and physical property  4) RoHS directive compliant green products5) Different sizes with different 3M adhesive 6) Rapid development line, from drawing, tool design to mold     support and samples 7) Customers' design and specifications are accepted 8) Available in various sizes and colorsInner packing:500pcs/bag