... )FDA silicone 2)various colors 3)custom sealing ring 4)good quality, reasonable price Silicone O Rings Manufactory - ... Just-in-time -20 years Experience Item nameO-Ring, Y-Ring, V-Ring, U-Ring, E-Ring,SizeCustomized/standard and nonstandardMaterialNBR, HNBR, EPDM, SILICONE, ... : 20~50degree centigrade;NBR(-40~120C),ACM(-30~180C),VITON(-25~300C), EPDM(-50-150C)CertificateCE, ROHS, PAHS, REACH, ISO9001: ...