Reliable Sealing Starts with the Right Arm Cylinder Seal Kit

When the arm cylinder on a Komatsu PC220-8 begins to leak, the machine usually shows the same warning signs: reduced digging force, unstable arm movement, oil seepage around the cylinder, and more downtime during daily work. For fleet owners, repair shops, and equipment users, choosing the correct seal kit is the fastest way to restore hydraulic performance without replacing the entire cylinder.

YNF18300 707-98-58240 Arm Cylinder Seal Kit is developed for Komatsu PC220-8 arm cylinder repair. It is designed to help restore sealing performance, reduce internal and external leakage, and improve the stability of cylinder operation under demanding working conditions.

Built for Daily Repair, Maintenance, and Replacement

This arm cylinder seal kit is suitable for customers who need a practical and dependable replacement solution for worn hydraulic seals. It is widely used in:

• excavator maintenance workshops
• spare parts distributors
• machinery rental companies
• end users repairing Komatsu excavators
• overseas buyers looking for replacement hydraulic seal kits

For buyers, the biggest concern is always compatibility. That is why this product is identified by Part Number 707-98-58240 and matched to Komatsu PC220-8 arm cylinder applications, making sourcing faster and easier.

Key Benefits of This Product

Good sealing performance
Designed for arm cylinder sealing positions to help reduce hydraulic oil leakage and maintain stable pressure.

Durable material options
Seal components can be supplied in commonly used materials such as NBR, PU, PTFE, and rubber compounds, depending on structure and working position requirements.

For demanding hydraulic environments
Suitable for excavator arm cylinder systems that operate under repeated movement, pressure fluctuation, dust exposure, and high-frequency workload.

Easy to identify and reorder
Buyers can confirm quickly by machine model + part number + cylinder position, which helps reduce purchasing mistakes.

Product Parameter Table

Need to confirm whether 707-98-58240 matches your PC220-8 arm cylinder?
Send us your machine model, part number, quantity, or old product photo, and we will help you check the correct seal kit quickly.