... :ISO9001 ,SGSwe are looking forware for your visit to our factory. Rubber seal/gasketMaterialEPDM,NBR,SR,SBR,NR ... .sizeAs your drawing or sampleUsageAuto,equipment,machine,industry,ship,computer etc.SampleFreeProductionDepend on the items shapeColorBlack,gray ... 20 years production experience2.Stable rubber material cooperation,make sure good quality rubber material for production3.SGS,ISO certificate, ...