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RITO Excavator Hydraulic Pump Seal Kit 4451039 Oil Seal Seal Ring ZX200 ZX210 ZX330 Excavator Main Pump Repair Kit for Hitachi

Hydraulic pump efficiency loss in ZX-series excavators is often caused by micro-leakage inside the rotating group, where worn sealing interfaces allow internal bypass and reduce effective pressure build-up. 4451039 hydraulic pump seal kit is designed for Hitachi ZX200, ZX210, and ZX330 main pump systems, restoring sealing integrity across high-precision hydraulic contact zones.

  • Item NO.:

    4451039
  • Order(MOQ):

    1
  • Payment:

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

    JAPAN
  • Lead Time:

    2-3 DAYS
  • Product Details

4451039 Hydraulic Pump Seal Kit

 
Product Specifications

Part Number  4451039
Part Name Hydraulic Pump Seal Kit
Compatible Brand Hitachi
Applicable Models ZX200 / ZX210 / ZX330
Application Excavator
Material NBR / PTFE / PU Composite Sealing Materials
Product Color Mixed (Black / White / Brown)
Working Temperature -35°C to 120°C
Key Function Restores internal sealing and hydraulic pressure efficiency
Condition 100% New, Aftermarket / OEM Quality
Packaging Wooden Case/Reinforced Carton/Neutral Packing / Customized Box

 

Key Features & Advantages


Precision

Internal Pressure Containment Restoration

Re-establishes sealing performance inside hydraulic pump rotating and compression zones.

Leak-Free

Leak Path Elimination Design Approach

Helps reduce internal oil bypass that directly affects pump output efficiency.

Direct Fitment

Multi-Interface Seal Reconstruction Set

Designed to support full-cycle hydraulic pump maintenance and rebuild operations.

Rigorous Testing

Stable Hydraulic Output Recovery Support

Improves pressure consistency during continuous digging and load variation conditions.

 
 

 

Excavator Hydraulic Part

FAQ


QWhat symptoms indicate seal kit failure in hydraulic pumps?
A: Weak digging force, slow response, pressure instability, or overheating of the hydraulic system.
 
QWhy does internal leakage reduce excavator performance?
A: Oil bypass inside the pump reduces effective pressure generation and energy efficiency.
 
QWhat is critical during installation?
A: Clean assembly environment and correct sealing orientation are essential to prevent early failure.
 
Q: Can this kit fully restore pump performance?
A: Yes, if core pump components are within allowable wear limits.
 
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.

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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.

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