1.ISO9001:2008,ERP management 2.QA Equipment 3.pneumatic o-ring sealing industrial 4.OEM/ODM pneumatic o-ring sealing Rubber pneumatic o-ring detail: Item namepneumatic o-ringSizeCustomized/standard and nonstandardBrand Namevalve sealMaterialNBR,HNBR,EPDM,SILICONE,VITON,FLS,FFPM,PTFETemperatureCommon: 20~50degree centigrade;NBR(-40~120C),ACM(-30~180C),VITON(-25~300C)CertificateCE, ROHS, PAHS, ...