721-98-00290 Boom Cylinder Seal Kit for Komatsu PC240LC-11 Excavator

Premium 721-98-00290 Boom Cylinder Seal Kit for Komatsu Excavators

Eliminate hydraulic fluid leaks and restore the powerful lifting capacity of your excavator with the WINSCHEN premium 721-98-00290 Boom Cylinder Seal Kit. Engineered specifically to withstand the extreme operational pressures, heavy payloads, and rugged environments of modern construction and earthmoving, this high-quality aftermarket repair kit ensures your Komatsu equipment operates safely and efficiently with zero pressure loss.

Key Features and Selling Points

• Manufactured to strict OEM dimensions, ensuring a precise and seamless fit for the boom hydraulic cylinders used in Komatsu PC240-11 series excavators (including LC, NLC, and E0 variants).
• Constructed from advanced elastomeric, polyurethane, and heavy-duty wear-resistant materials to provide exceptional resistance to high hydraulic pressure spikes, continuous rod friction, and extreme thermal variations.
• Effectively eliminates internal fluid bypass and external leakage, preventing boom drift and maintaining highly responsive, consistent lifting force during demanding loading operations.
• This comprehensive seal kit includes all essential precision components—such as O-rings, dust seals, back-up rings, wear rings, piston rings, rod packings, and buffer rings—required for a complete and reliable cylinder overhaul, directly replacing part number 721-98-00290.
• A cost-effective, highly reliable aftermarket alternative that meets or exceeds original equipment standards, minimizing your machine’s routine maintenance downtime and maximizing on-site productivity.

Compatible Equipment Models

Based on official catalog and parts cross-reference data, the 721-98-00290 seal kit services the boom cylinders of the following Komatsu equipment:

• Excavators: PC240LC-11, PC240NLC-11, PC240LC-11E0, PC240NLC-11E0
• Application: Boom Cylinder Hydraulic Service & Rebuild

Specifications

To guarantee 100% fitment, please verify your machine’s model, serial number, and original cylinder configuration with our dedicated support team prior to purchasing. We proudly offer fast and reliable global shipping to keep your heavy equipment working hard.