1.engine oil seals applied in auto engine,bearing ... 2.in good quanlity ... competitive price 3.quality system;ISO/TS16949 Product/Service(We Sell):oil sealMaterialFKM,ACM,NBR,PTFE,etc, just as your request.CertificationISO ... systemmixing machinethe vulcanization production linethe main production spottesting room engine oil seal