Boom Cylinder Seal Kit Js205 (550-41747) WYS Genuine Quality Hydraulic Seal Kit
The WYS Boom Cylinder Seal Kit JS205 (Part No. 550-41747) is a high-performance hydraulic sealing solution designed for excavator boom cylinders. Manufactured by Wonyoung Seal Corp. (WYS), this kit ensures excellent durability, superior sealing performance, and extended service life under heavy-duty working conditions.
Engineered with premium materials, it is ideal for rebuilding hydraulic cylinders in construction machinery, providing reliable resistance against pressure, wear, oil leakage, and extreme temperatures.
| Attribute | Details |
|---|---|
| Brand | WYS (Wonyoung Seal Corp.) |
| Product Name | Boom Cylinder Seal Kit |
| Part Number | JS205 (550-41747) |
| Material | PU / NBR / PTFE / Piston Seal Composite |
| Application | Excavator Boom Hydraulic Cylinder |
| Condition | 100% Brand New |
| Country of Origin | Korea |
| Packaging | Individual Seal Kit (1 Set) |
This kit is compatible with or suitable for multiple excavator models in similar hydraulic configurations:
| JS Series | Other Compatible Excavator Series |
|---|---|
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- Genuine WYS (Wonyoung Seal Corp.) Quality Parts
- Designed for heavy-duty excavator boom cylinders
- High wear resistance & long service life
- Excellent oil & pressure sealing performance
- Heat-resistant and anti-deformation materials
- Precision-engineered for perfect fit and easy installation
- ISO-certified manufacturing quality

This seal kit is widely used in hydraulic systems for:
- Excavators (Boom Cylinder Repair)
- Construction Machinery
- Earthmoving Equipment
- Mining Machinery
- Industrial Hydraulic System

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