Boom Cylinder Seal Kit for Doosan 225 Excavator Repair

This 440-00355AKT boom cylinder seal kit is used for Doosan 225 excavator boom cylinder repair. It is designed to help restore hydraulic sealing performance when the boom cylinder has oil leakage, weak lifting power, pressure loss, slow boom movement, or unstable boom holding performance.

The boom cylinder works under heavy hydraulic load d

uring lifting, digging, loading, trenching, and earthmoving operations. When the internal seals become worn, aged, hardened, cracked, or damaged, hydraulic oil may leak from the cylinder rod area, and the excavator may lose stable boom lifting force. Replacing the damaged seals with the correct boom cylinder repair kit is a practical way to rebuild the hydraulic cylinder and reduce downtime without replacing the complete boom cylinder assembly.

Product Parameters

Main Selling Points

Accurate Match for Doosan 225 Boom Cylinder
This seal kit is matched with part number 440-00355AKT and used for the Doosan 225 boom cylinder. Buyers can confirm the item by part number, machine model, and cylinder position, helping reduce wrong orders before purchase.

Helps Restore Boom Lifting Performance
A damaged boom cylinder seal may cause hydraulic oil leakage, weak lifting force, boom drifting, slow cylinder response, and pressure loss. This hydraulic cylinder seal kit helps rebuild the sealing system and improve the boom cylinder’s working performance after maintenance.

Cost-Effective Excavator Repair Solution
Using the correct excavator cylinder repair kit can reduce repair cost and shorten machine downtime compared with replacing the complete boom cylinder. It is suitable for excavator owners, hydraulic repair workshops, fleet maintenance teams, and spare parts resellers.

Convenient for Stock and Mixed Orders
The kit is supplied as one complete set, easy to identify, store, and ship. It can be ordered together with arm cylinder seal kits, bucket cylinder seal kits, hydraulic pump seal kits, control valve seals, rod seals, piston seals, dust seals, wear rings, and O-ring kits.

Application

This boom cylinder seal kit 440-00355AKT is suitable for Doosan 225 excavator boom cylinder maintenance. It is commonly used when the machine shows hydraulic oil leakage around the boom cylinder rod, weak boom lifting force, unstable holding, slow boom action, or reduced hydraulic response.

For customers purchasing multiple repair parts, we can help match related excavator seal kits and hydraulic parts according to machine model, part number, cylinder photos, or old seal kit sample details.

Buyer Reminder

Please confirm the part number 440-00355AKT, machine model Doosan 225, and cylinder position before ordering. If you are not sure whether this seal kit fits your excavator, send us the machine model, part number, cylinder photos, or old seal kit sample details. We can help check the correct item before shipment.

Equipment names and part numbers are used for reference and identification only.

Primary Keywords: boom cylinder seal kit, hydraulic cylinder seal kit, excavator seal kit, cylinder repair kit
Long-tail Keywords: 440-00355AKT boom cylinder seal kit, Doosan 225 boom cylinder seal kit, YNF18327 seal kit, excavator boom cylinder repair kit, hydraulic boom cylinder seals, Doosan excavator seal kit