1.High Anti-aging Index, 2.High wearing resistance; 3.With Favorable prices; 4. Quick Delivery Available; 5.OEM is welcomed; Products Features:1.available material: materials for silicone, NBR, fluorosilicone, viton (FKM, FPM), viton Dupont & Dow corning, CR, NBR, HNBR, PVC, PU, NR,SBR, IIR, AU, ACM, etc, NSF-61 approved material, meets drinking water system requirements;2.all manufacturing ...