O-Ring Kits (LRD-01) Model:LRD-01 Size:18 different size material:NBR,VITON EPDM,Silicone.... Hardness: ... 60-90 ShoreA O-Ring Kits (LRD-01)1.Kinds: 18 sizes = 225pcs2.Apply for auto,machines,air ... are interested in anyone of them. O-Ring Kits (LRD-01)