RD809-72090 Arm Cylinder Seal Kit for Kubota Excavators KX080 Series
RD809-72090 Product Overview
As a leading manufacturer of high-quality hydraulic seal kits, our factory proudly presents the RD809-72090 Seal Kit, a robust and reliable solution engineered for Kubota KX080-3 excavators. This premium aftermarket kit is specifically designed to restore optimal sealing performance in the arm cylinders of models such as the Kubota KX080-3, KX080-3T, KX080-4, KX080-4S, and KX080-4S2. Manufactured with precision and using durable materials, this seal kit effectively prevents hydraulic fluid leakage, protects against contamination, and ensures the smooth, powerful operation of your excavator’s critical hydraulic functions. Ideal for heavy equipment parts suppliers, repair shops, and fleet maintenance teams, our RD80972090 seal kit guarantees extended component life and reduced downtime for your machinery.
Technical Specifications
Specification | Detail |
Part Number | RD809-72090 |
Applicable Models | Kubota KX080-3, KX080-3T, KX080-4, KX080-4S, KX080-4S2 Excavators |
Cylinder Application | Arm Cylinder |
Rod Diameter | 60 mm |
Bore Diameter | 100 mm |
Condition | New, Aftermarket Replacement |
Material Composition | High-grade Polyurethane (PU), Nitrile Butadiene Rubber (NBR), PTFE |
RD809-72090 Seal Kit Components
Component | Function |
Rod Seals | Prevents external leakage along the cylinder rod. |
Piston Seals | Ensures efficient pressure separation within the cylinder. |
Wiper Seals | Keeps contaminants out by cleaning the rod surface. |
Wear Rings | Guides the piston and rod, preventing metal-to-metal contact. |
Buffer Seals | Absorbs pressure spikes and protects the rod seal. |
O-rings | Provides static and dynamic sealing in various applications. |
Core Advantages
•Precision Fit & Performance: Engineered to exact OEM specifications for seamless integration and reliable hydraulic function.
•Enhanced Durability: Constructed from premium materials resistant to abrasion, high pressure, and temperature fluctuations.
•Cost-Effective Solution: Offers a high-quality, long-lasting repair at a competitive price, minimizing operational expenses.
•Optimized for KX080-3 Series: Specifically designed for the demanding arm cylinder applications in Kubota KX080-3 series excavators.

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