... and so onHardness30~90 Shore ASize30Size 382 PCSStandardAS568,JISO ring colorBlack, green and so onBox colorRed, yellow or customizedPaymentT ... : 1) Model No.: 30Size 382pcs 2) Material : NBR, FKM, EPDM, HNBR, Silicone and so on 3) Color of o-ring : black ... Spec: 30sizes, total 382 pcs. 6) Metric or Inch standard. Applications: Automobile, Mechanical seals, Electronic, Fluid seals, Air Valve seals ...