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RITO 4448398 Excavator Boom Cylinder Seal Kit ZX200 ZX210 ZX330 Hydraulic Cylinder Seal Kit for Hitachi

Frequent hydraulic leaks in boom cylinders cause dangerous drifting and expensive project delays. Weak seals fail under high pressure, risking equipment safety at mining sites. Our 4448398 seal kit provides a high-resilience solution, stopping leaks and restoring lifting power for wholesalers and fleet owners.

  • Item NO.:

    4448398
  • Order(MOQ):

    1
  • Payment:

    T/T, WESTERN UNION, CHINESE BANK,PAYPAL
  • Product Origin:

    JAPAN
  • Lead Time:

    2-3 DAYS
  • Product Details

Optimized for Hitachi ZX200, ZX210, and ZX330 series, the 4448398 boom cylinder seal kit features reinforced TPU and PTFE materials. It outperforms standard kits in wear resistance and thermal stability. Secure your machine's precision and uptime with RITO’s heavy-duty industrial repair solutions.

4448398 Boom Cylinder Seal Kit

 
Product Specifications

Part Number  4448398
Part Name Excavator Boom Cylinder Seal Kit
Compatible Brand OEM (Japan)
Applicable Models ZX200, ZX210, ZX230, ZX270, ZX330
Application Excavator hydraulic system
Material TPU, NBR, and PTFE
Product Color Multi-color
Working Temperature -35°C to 110°C
Key Function Hydraulic Fluid Sealing and Boom Cylinder Repair
Condition 100% New, Aftermarket / OEM Quality
Packaging Wooden Case/Reinforced Carton/Neutral Packing / Customized Box

 

Key Features & Advantages


Precision

High-Pressure Reliability

Specifically engineered to withstand extreme hydraulic spikes, preventing oil bypass and maintaining consistent boom lifting force during heavy excavation.

Leak-Free

Superior Material Durability

Utilizes high-grade TPU and friction-resistant elastomers to minimize wear, significantly extending the service life of cylinders in abrasive mining environments.

Direct Fitment

Precision OEM Compatibility

Direct replacement for 4448398, ensuring an exact fit for ZX-series cylinders to eliminate installation errors and ensure a perfect leak-free seal.

Rigorous Testing

Global Supply Tiering

We offer Original, OEM, and high-performance Aftermarket options to provide flexible procurement strategies for diverse regional markets.
 
 

 

Excavator Hydraulic Part

FAQ


Q: What are the primary failure signs indicating the 4448398 boom seal kit needs replacement?
A: Look for "boom drift," where the boom slowly lowers while the controls are in neutral, or visible hydraulic oil leaking down the cylinder rod. If you notice jerky boom movements or external oil pooling around the cylinder head, the internal seals or rod wipers have likely reached their wear limit.
 
Q: What are the critical installation technical requirements for this boom kit?
A: Cleanliness is paramount; ensure the rod and cylinder bore are free of debris. Always lubricate new seals with fresh hydraulic oil before assembly. Use professional seal expanders to avoid twisting the U-cups or nicking the sealing lips, which can cause immediate leaks upon startup.
 
Q: How do I confirm the 4448398 kit is the correct fit for my specific Hitachi fleet?
A: Cross-reference the OEM part number 4448398 with your machine's parts manual. This kit is specifically designed for the boom cylinder of Hitachi ZX200 and ZX330 series. Checking the cylinder rod diameter and seal configuration against your service records will ensure 100% compatibility.
 
Q: How does this seal kit perform in extreme mining or high-temperature environments?
A: Our kit is formulated for thermal stability, maintaining its structural elasticity in temperatures ranging from -35°C to 110°C. The high-performance TPU prevents seal hardening in cold climates and resists extrusion under the intense thermal loads common in heavy-duty open-pit mining operations.
 

Q: What quality options are available?

A: We provide original, OEM, and high-quality aftermarket versions with stable supply capability.

Q:Why Choose RITO?

A:Listed Factory

Stable&Reliable Quality

OEM Factory for Chinese Top Excavator Brands

Supplier to Fortune 500 Companies
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If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

Leave A Message

Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

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