Komatsu 707-99-46200 Arm Cylinder Seal Kit

Technical specification for hydraulic arm cylinder seal kit designed for Komatsu PC150-5 excavators. The kit contains all necessary seals, O-rings, and wear rings to rebuild the arm cylinder assembly. Engineered to meet OEM dimensional standards for 85mm rod diameter and 120mm bore diameter. Materials include high-grade nitrile rubber (NBR), polyurethane (PU), and PTFE components compatible with mineral-based hydraulic fluids. Direct replacement for Komatsu part number 707-99-46200. Material composition includes precision-molded sealing elements designed for high-pressure hydraulic environments. The kit facilitates complete cylinder resealing to restore hydraulic integrity and prevent drift. Cross-references include Allis-Chalmers AC707-99-46200 and various aftermarket equivalents.