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Product Details
Product Overview
This high-quality Arm Seal Kit is specifically designed for Hitachi excavator models, including the EC240B and EX200-5 series, ensuring reliable performance for your heavy machinery. Manufactured to meet or exceed OEM specifications, this seal kit effectively prevents hydraulic fluid leaks and maintains optimal boom arm pressure. With global shipping capabilities, we serve major markets across North America, Europe, Asia-Pacific, the Middle East, and Africa, ensuring fast delivery to industrial centers and ports worldwide.
Key Features & Benefits
Superior Material Composition: Manufactured from high-grade NBR (Nitrile Butadiene Rubber) and PU (Polyurethane) for exceptional wear resistance and long service life.
Precision Engineering: CNC-machined to exact tolerances, ensuring a perfect fit and eliminating installation issues.
Leak-Proof Performance: Advanced lip seal design prevents hydraulic fluid leakage under high pressure (up to 350 bar) and extreme temperatures (-30°C to +120°C).
Cost-Effective Solution: Direct replacement for OEM parts without compromising quality, reducing downtime and maintenance costs by up to 40%.
Rust-Proof Packaging: Individually sealed with anti-corrosion coating to ensure product integrity during storage and transport.
Technical Specifications
Specification
Details
Part Name
Arm Seal Kit
Model Application
Hitachi EC240B, EX200-5
Engine Compatibility
Isuzu 4BD1, 6BD1
Material
NBR + PU
Hardness (Shore A)
85 ± 5
Temperature Range
-30°C to +120°C
Working Pressure
Up to 350 bar
Package Contents
Full seal set (rod seals, wiper seals, O-rings, backup rings)
Warranty
12 months
OEM Cross-Reference
This Arm Seal Kit is a direct replacement for the following OEM part numbers:
Hitachi OEM: 4330203, 4330204, 4330205
Isuzu OEM: 8-98023-526-0, 8-98023-527-0
Alternative Part Numbers: 07360-00000, 07360-10000
Note: Always verify your original part number before ordering. Contact our technical team for cross-reference assistance.
Compatibility
This seal kit is compatible with the following equipment:
Trade Compliance: Full customs documentation provided, including commercial invoices, packing lists, and certificates of origin
Minimum Order: 1 set (sample orders welcome)
Quality Assurance
Certifications: ISO 9001:2015 certified manufacturing facility
Testing Standards: JIS B 2401 (Japanese Industrial Standard) for hydraulic seals
Quality Control: 100% dimensional inspection and pressure testing before shipment
Warranty: 12 months against manufacturing defects (excluding improper installation or misuse)
Traceability: Each kit comes with a unique batch number for full traceability
FAQ
Q1: How do I confirm this seal kit fits my Hitachi EC240B excavator? A: Check your machine’s serial number and original part number. This kit fits EC240B models with serial numbers starting from 10001 and above. For EX200-5 models, verify the arm cylinder bore diameter is 120mm. If uncertain, send us a photo of your old seal or the part number stamped on the cylinder.
Q2: Can I install this seal kit myself, or do I need professional help? A: While basic mechanical knowledge is sufficient, we recommend professional installation by a certified hydraulic technician. The kit includes detailed installation instructions. Key steps include: (1) thoroughly clean the cylinder bore, (2) lubricate seals with hydraulic oil before installation, (3) use a seal installation tool to avoid damaging the lip seals. Improper installation may void the warranty.
Q3: What is the typical lifespan of this seal kit under normal operating conditions? A: Under normal operating conditions (clean hydraulic oil, proper pressure settings, and regular maintenance), this seal kit typically lasts 2,000-3,000 operating hours. Factors that may reduce lifespan include contaminated hydraulic fluid, excessive heat (above 100°C), or operating pressures exceeding 350 bar. We recommend replacing hydraulic oil filters every 500 hours to maximize seal life.
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