Aftermarket 707-99-37290 Hydraulic Cylinder Seal Kit

This hydraulic cylinder seal kit is engineered to OEM specifications for the bucket cylinder of Komatsu PC160LC-7 and PC180LC-7K hydraulic excavators. The kit includes nitrile rubber (NBR) O-rings, backup rings, buffer seals, and piston/rod seal assemblies designed for high-pressure hydraulic systems operating in construction environments. It restores cylinder sealing integrity, prevents oil leakage, and ensures smooth actuator operation. Compatible with Komatsu part number 707-99-37290. Additional coverage includes boom cylinder kits (707-99-38720), arm cylinder kits, and swing joint seal kits (703-08-33630) for PC160-6, PC160-7, and PC160-8 series machines. All components are manufactured to withstand high pressure cycles and temperature extremes typical in heavy equipment hydraulic circuits.