707-99-46130 Seal Kit for Komatsu PC200-7 Excavator Boom Cylinder Repair
707-99-46130 Seal Kit Product Overview
The 707-99-46130 Seal Kit is a standard hydraulic boom cylinder repair kit exclusively for the Komatsu PC200-7 excavators. This kit resolves leaks, pressure loss, and jerky boom movement by restoring factory sealing performance while optimizing resistance to abrasive contaminants and high-impulse loads in harsh excavation environments.
707-99-46130 Boom Seal Kit Technical Specifications
| Komatsu Models Fits | PC200-7, PC200LC-7 |
| Application | Excavator Boom Cylinder Complete Rebuild Kit |
| Pressure Rating | 0–35 MPa (5,076 PSI) – Matches Komatsu Standards |
| Temperature Range | -30°C to +110°C (-22°F to +230°F) – depends on the material, Support custom |
| Seal Materials | Premium NBR/FKM Primary Seals + Urethane Buffer Rings |
| Wear Components | PTFE-Infused Guide Rings, Zero-Leak Piston Seals, HNCR Backup Rings |
The Excavator Seal Kits Main Components
| 1. Double-Acting Piston Seal (FKM) | Laser-profiled 4-lip design |
| 2. Rod Seal Assembly (NBR+POM) | Integrated wear ring/scraper – blocks contaminants with dual dust lips |
| 3. Wiper (Polyurethane) | Quad-sealing edge – exceeds JIS D 2601 dirt exclusion rating |
| 4. Wear Bands (PTFE+Glass Fiber) | Reduce friction 40% vs. cast iron – 500K+ cycle durability per JIS B 8354 |
| 5. Anti-Extrusion Rings (HNBR) | Prevent seal nibbling under 5° rod misalignment |
| 6. O-Rings (FKM/HNBR) | Static seals for gland/piston – immune to hydrolysis & HGP fluids |
Key Features
✅ Exact Komatsu Fit: Direct replacement for PC200-7 excavators hydraulic boom cylinder repair
✅ Heavy-Duty Pressure Control: 5,076 PSI rating withstands hydraulic hammer/shock impulses
✅ Abrasion Defense System: Urethane scraper + PTFE wear bands reduce cylinder scoring by 70%
✅ Bio-Fluid Compatible: All seals engineered strictly fits for Komatsu standard
✅ Extended Service Life: Field-tested >8,000hrs in demolition/quarry operations
Frequently Asked Questions (FAQ)
Q: Do you have any other excavator model repair seal kits ?
A: Yes. As the professional excavator seal kits manufacturer, we produce all the excavators repair seal kits, standard sizes and also support customization. Please tell us the part number seal kit you want.
Q: I can’t find the model I want. Are all your seal repair kits here?
A: No. We have more than tens of thousands seal kits. Here only a small part of them is shown. We have stock of all the seal kits for construction machinery. Please contact us!
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