... FDA silicone 2)various colors 3)custom sealing ring 4)good quality, reasonable price Silicone O ... -time -20 years Experience Item nameO-Ring, Y-Ring, V-Ring, U-Ring, E-Ring,SizeCustomized/standard and nonstandardMaterialNBR, HNBR, EPDM, SILICONE, VITON ... heat-resistant; abrasion-resistant; aging-resistant; insulation; acid and alkaline resistant; airtight; shock absorption, etc.Shipping1) Small ...