... seal ring 1)FDA silicone 2)various colors 3)custom sealing ring 4)good quality, reasonable price Silicone O ... Ring, Y-Ring, V-Ring, U-Ring, E-Ring,SizeCustomized/standard and nonstandardMaterialNBR, HNBR, EPDM, SILICONE, VITON, FFPM, PTFE, etc ... ; heat-resistant; abrasion-resistant; aging-resistant; insulation; acid and alkaline resistant; airtight; shock absorption, etc.Shipping1) Small quantity ...