87428874 Boom Cylinder Seal Kit for Case Backhoe Loaders
87428874 Seal Kit Product Overview
As a leading manufacturer of high-quality hydraulic seal kits, our factory proudly presents the 87428874 Seal Kit, a robust and reliable solution engineered for Case 590SR Super R backhoe loaders. This premium aftermarket kit is specifically designed to restore optimal sealing performance in the boom cylinders of models such as the Case 590SR Super R, 590SR Super R Tier 2, and 590SR Super R Tier 3. 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 backhoe loader’s critical hydraulic functions. Ideal for heavy equipment parts suppliers, repair shops, and fleet maintenance teams, our 87428874 seal kit guarantees extended component life and reduced downtime for your Case 590SR machinery.
Technical Specifications
| Specification | Detail |
| Part Number | 87428874 |
| Applicable Models | Case 590SR Super R, 590SR Super R Tier 2, 590SR Super R Tier 3 Backhoe Loaders |
| Cylinder Application | Boom Cylinder |
| Rod Diameter | 2-1/2 inch |
| Bore Diameter | 135 mm |
| Condition | New, Aftermarket Replacement |
| Material Composition | High-grade Polyurethane (PU), Nitrile Butadiene Rubber (NBR), PTFE |
87428874 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 in Case 590SR boom cylinders.
•Enhanced Durability: Constructed from premium materials resistant to abrasion, high pressure, and temperature fluctuations, ensuring long service life.
•Restores Hydraulic Integrity: Effectively eliminates leaks and restores full hydraulic power, improving machine productivity and safety.
•Cost-Effective Maintenance: A reliable aftermarket alternative that offers significant savings without compromising on quality or longevity.
Frequently Asked Questions (FAQ)
Q: Do you have any other excavator model repair seal kits ?
A: Yes. As the professional seal kits manufacturer, we produce all the hydraulic cylinder repair seal kits, standard sizes and also support customization. Please tell us the part number seal kit you want.
Q: I can’t find the model I want. Are all your seal repair kits here?
A: No. We have more than tens of thousands seal kits. Here only a small part of them is shown. We have stock of all the seal kits for construction machinery. Please contact us!
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