1.SGS,ISO,for different machines 2.SR,EPDM,SBR,CR,NBR,FPM etc. 3.UV,FR,oil proof, ... ,mineral oil,lubricant and other different environment2.materia:SR,NBR,EPDM,NR,SBR3.color:available in any color,according to customer ... /oil/abrasion resistance etc.sizeAs your drawing or sampleUsageAuto,equipment,machine,industry,ship,computer etc.SampleFreeProductionDepend on the items shapeColorBlack,gray ...