Doosan DH225-7 Main Pump Seal Kit K3V112DT

This hydraulic main pump seal kit is engineered for the Kawasaki K3V112DT-HN0V variable displacement axial piston pump used on Doosan Daewoo DH225-7 crawler excavators. The kit contains precision-molded NBR/HNBR high-pressure seals, O-rings, backup rings, and wear rings designed to withstand 35 MPa operating pressure and temperatures from -20°C to 120°C. It restores sealing integrity between pump rotating group, control valve, and housing interfaces, preventing internal leakage and maintaining hydraulic efficiency. Direct replacement for OEM seal kits used in 20-23 ton class excavators including Solar 225LC-V and DX225 series.