Doosan Adjust Cylinder Seal Kit for Daewoo DH220-2

This hydraulic cylinder seal kit is designed for the track adjuster (tensioner) cylinder on Daewoo DH220-2 crawler excavators. The kit contains all necessary sealing elements including piston seals, rod seals, wipers, and O-rings to rebuild the adjuster cylinder and prevent hydraulic oil leakage. Manufactured to OEM specifications using high-grade nitrile rubber (NBR), polyurethane (PU), and PTFE compounds, the kit withstands continuous operating pressures up to 35 MPa and temperature extremes from -30°C to 120°C. Precision-molded components ensure exact dimensional interchangeability with original Daewoo/Doosan hardware, restoring track tension stability and undercarriage performance.