O ring, chain ring, lip ring. Material: SIL, NBR, EPDM, CR etc. High quality and competitive price. Item ST-38Material rubber: SIL,NBR, EPDM,CR Color red,white, blackSize according your requirementFeature different color,different size Usage widely used in industryCustomizedOEM & ODM are welcomed MOQ 5000pcsSamplesSample lead time:3-5daysSample fee and the freight should be paid by buyersPacking ...