707-99-45230 Hydraulic Seal Kit for Komatsu Excavator PC200-7 Bucket Cylinder Repair
707-99-45230 Hydraulic Seal Kit for Komatsu PC200-7 Bucket Cylinder
The 707-99-45230 hydraulic cylinder seal kit is an aftermarket repair kit supplied by DJF for the bucket cylinder of Komatsu PC200-7 series excavators. The bucket cylinder works in the harshest position on the machine — near-ground digging and loading — so replacing worn seals with a complete kit is the standard way to restore breakout force, stop external leakage and protect the rod and bore from contamination.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 707-99-45230 |
| Compatible Models | Komatsu PC200-7, PC200LC-7 (bucket cylinder; third-party sources also list PC210-7) |
| Cylinder Position | Bucket cylinder |
| Rod Diameter | Confirm before ordering |
| Pressure Rating | Confirm before ordering |
| Temperature Range | Confirm before ordering |
| Seal Materials | Confirm before ordering |
| Component Quantity | Confirm before ordering |
| Certifications | Confirm before ordering |
| Condition | New aftermarket replacement |
Typical Kit Contents
A complete cylinder reseal kit normally includes rod seals, piston seals, wipers (dust seals), wear rings (guide bands), buffer seals and O-rings. The exact contents and quantities of the DJF 707-99-45230 kit: Confirm before ordering.
Why Replace the Bucket Cylinder Seals on PC200-7?
- Internal bypass after seal wear directly reduces digging and breakout force.
- Failed wipers let sand, clay and water into the cylinder, scoring the rod and bore.
- External leaks increase oil consumption, downtime and cleanup cost.

Frequently Asked Questions
Q: Do you have seal kits for other excavator models?
A: Yes. As a professional excavator seal kit manufacturer, DJF supplies repair kits for standard sizes and supports customization. Please tell us the part number you need.
Q: I cannot find the model I want. Do you have all the seal kits here?
A: No — we carry tens of thousands of seal kits, and only a small part is shown on this page. We stock seal kits for most construction machinery. Please contact us.
Minimum Order Quantity (MOQ)
MOQ: 5 kits per part number. For wholesale prices, stock and lead time, email [email protected] or [email protected].
Contact DJF
Request a quote or catalog at [email protected] / [email protected]. Factory-direct wholesale for distributors and repair facilities.





