Aftermarket DH300 Swing Motor Seal Kit

This hydraulic seal kit is engineered for the swing motor (slew motor) installed on Doosan Daewoo DH300 series crawler excavators. It restores sealing integrity of the hydraulic rotary actuator, preventing internal bypass and external leakage under high-pressure slewing operations. The kit is compatible with Kawasaki M2X170 and Jeil JMF195 swing motor models used across DH300, DH300-5, DH300-7, DX300LC, and Solar 300 platforms. The kit comprises premium-grade NBR (Nitrile Butadiene Rubber) seals with optional FKM (Fluoroelastomer) for high-temperature stability. Components include high-pressure shaft seals, D-rings, O-rings of various cross-sections, wear rings, and gaskets precisely molded to OEM groove dimensions. Materials withstand hydraulic oil compatibility per ISO 6743-4 and operating pressures up to 35 MPa. Designed as a complete overhaul set for single motor rebuild. Verified fitment for Doosan DE08TIA and D1146T1 powered machines. Cross-reference compatibility depends on installed motor serial number; confirm motor part number (e.g., 401-00457B, 401-00359) prior to installation.