42N-6C-13340 Bucket Cylinder Hydraulic Seal Kit 42N6C13340 for Komatsu Excavator WB146-5 WB146PS-5 WB156-5 WB156PS-5 WB91R-5 WB91R-5E0 WB93R-5 WB93R-5E0 WB93S-5 WB97S-5 WB97S-5E0
42N-6C-13340 Bucket Cylinder Seal Kit – OEM-Compatible Seals for Komatsu Excavator and Loader Bucket Hydraulics
Product Overview
The 42N-6C-13340 Bucket Cylinder Seal Kit is a precision-engineered sealing solution designed specifically for bucket hydraulic cylinders in excavators and wheel loaders. This kit restores cylinder performance by preventing leaks, reducing contamination, and ensuring reliable operation in standard digging and material handling applications.
Technical Specifications
| Parameter | Specification |
|---|---|
| Compatible Equipment | Excavators (Komatsu WB146-5, CAT 320), Loaders (Volvo L150) |
| Pressure Range | 0–25 MPa (3,625 PSI) |
| Temperature Tolerance | -20°C to +100°C (-4°F to +212°F) |
| Dynamic Seals Material | High-Grade Nitrile Rubber (NBR) – Resists abrasion from soil and debris |
| Static Seals Material | NBR O-Rings – Compatible with ISO VG 46/68 hydraulic oils |
| Guide Components | PTFE-Reinforced Nylon – Minimizes friction and wear |
| Certifications | ISO 9001 (Quality Management System) |
| Compatibility | Bucket Cylinder (Single-Acting or Double-Acting) |
Kit Components & Functions
| Component | Function |
|---|---|
| 1. Piston Seal (NBR U-Cup) | Prevents internal leakage between cylinder chambers during bucket operation. |
| 2. Rod Seal (Double-Lip) | Blocks external leaks and debris ingress in dusty environments. |
| 3. Heavy-Duty Wiper | Removes dirt and grit from the piston rod during retraction. |
| 4. Guide Rings | Ensures smooth piston movement and reduces metal-to-metal contact. |
| 5. O-Rings | Static sealing for cylinder ports and end caps. |
| 6. Backup Rings | Protects primary seals from extrusion under pressure cycles. |
Key Features & Benefits
✅ OEM-Equivalent Design: Matches CAT 320 and Komatsu WB146-5 PC200 bucket cylinder specifications.
✅ Extended Durability: NBR seals withstand frequent digging and loading cycles.
✅ Complete Repair Kit: All components required for full bucket cylinder overhaul.
✅ Cost Savings: Avoids costly cylinder replacements with reliable leak prevention.
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