1.ISO,ERP systerm management 2.QA Equipment 3.OEM square ... welcome according clients requirement Specification: Item name square seal rubberSizeCustomized/standard and nonstandardBrand NamedekeMaterialNBR,HNBR,EPDM,SILICONE,VITON,FLS,FFPM,PTFETemperatureCommon ... : 20~50degree centigrade;NBR(-40~120C),ACM(-30~180C),VITON(-25~300C)ColorRed, Black, White ...