... , Ring Wear, Seal Oil, 2.Excavator and Crane Repair Seal Kit 3.Life of the mold: can be 50,000times, Description ... of High Tensile Strength Hydraulic Seal Kit:1. Materials: can be NR, HNBR, MVQ, ACM, FLS, CR ... is ± 5 shore A, and can be ±3 shore A for special products. 4. Size tolerance: exactly upon your request or ...