... O ring Medical Gaskets Silicone Gasket Ring The Details: ItemMedical Gaskets Silicone Gasket RingMaterialNBR,SBR,EPDM,SILICONE,VITON,NR and etcSizeCustomized ... received, just dependson order quantity. MaterialMade by 100% silicone or other kind of rubber,it can at your requestShapeAny ... design,too.Featuresthe product is strong to save oil/durable.performance:1.Seal Ring good sealing, working life high ...