HQPA Main Valve Seal Kit Doosan Daewoo DH220-5

This hydraulic main control valve seal kit is engineered for Doosan Daewoo DH220 series excavators, specifically covering DH220-2, DH220-3, DH220-5, DH220-7, and DH220-9E models. The kit contains all necessary seals for the main control valve assembly, including O-rings, backup rings, dust seals, and wear rings manufactured from high-grade NBR (Nitrile Butadiene Rubber) with 90 Shore A hardness. Designed to withstand continuous operating pressures up to 35 MPa and temperature ranges from -25°C to 120°C, the kit restores valve spool sealing integrity, prevents hydraulic drift, and ensures precise actuator control. Direct replacement for OEM control valve seal requirements on Doosan DB58 powered excavators.