... silicone rubber material Item nameo-ringSizeCustomized/standard and nonstandardBrand Nameo ring.MaterialNBR,HNBR,EPDM,SILICONE,VITON,FLS,FFPM,PTFETemperatureCommon: 20~50degree ... . Order 1.show us the 3D drawing of your O-ring. we will do the sample according to your drawing,.if ...