Hydraulic Pump Parts OVERHAUL SEAL KIT-5423 109826-000 R990398

This full overhaul seal kit is engineered as a direct replacement for hydraulic pump assembly model 5423, marked with OEM reference 109826-000 and part code R990398. Every sealing component inside matches original sizing and groove dimensions, eliminating fit gaps during pump rebuild work for construction and industrial hydraulic units.

All rubber seals, O-rings, backup rings and shaft gaskets use high-grade nitrile and PTFE composite materials. They hold stable performance against high-pressure hydraulic oil, temperature swings and long-cycle operation, resisting swelling, cracking and premature leakage under heavy load conditions.

The complete set covers all sealing points required for full pump disassembly and overhaul. It includes port seals, piston rod packings, valve plate gaskets and internal chamber O-rings, removing the hassle of sourcing separate loose seals one by one for maintenance jobs.

Designed for field repair and workshop pump refurbishment, the kit cuts downtime on site. Technicians can complete full resealing without modifying pump housings or adjusting component clearances, fitting perfectly onto standard 5423 hydraulic pump assemblies with no machining needed.

Strict factory dimensional inspection is carried out on every batch before packaging. This seal overhaul kit serves as a cost-effective maintenance spare to restore pump pressure efficiency, stop external oil leaks and extend the overall service life of your core hydraulic pump equipment.