... .delsonglobal.com, Viton, Silicone and so onHardness30~90 Shore ASize30Size 382 PCSStandardAS568,JISO ring colorBlack, green and so onBox colorRed, yellow ... , yellow, red, green or customized color. 5) Spec: 30sizes, total 382 pcs. 6) Metric or Inch standard. Applications: Automobile, Mechanical seals ...