colored o rings 1.Made of silicone rubber or other ... supply 4.Offer OEM & ODM Product: colored o rings O-Ring is a kind of sealing products which ... material contains: NR, CR, NBR, SBR, VITON, SILICON, HNBR, PU etc.Item nameO RINGMaterialNBR,HNBR,EPDM,SILICONE,VITON ... daysOEM/ODMwelcome Our company produce o-rings (o-ring), waterproof circle, rubber ring, silicon gasket, sealing ring, sealing gaskets, ...