YN01V00175R300 Arm Cylinder Seal Kit for Kobelco Excavators SK200-8
YN01V00175R300 Seal Kit Product Overview
The YN01V00175R300 is the genuine Kobelco OEM seal kit for arm (stick) cylinders on Kobelco SK200-8 excavators. This repair kit restores factory hydraulic sealing to eliminate internal leakage, maintain digging force accuracy, and prevent boom/stick drift during heavy excavation.
YN01V00175R300 Arm Cylinder Seal Kit Technical Specifications
| Compatible Models | Kobelco SK200-8 |
| Cylinder Rod/Bore | 90mm (3.54″) / 125mm (4.92″) |
| Pressure Rating | 34.3 MPa continuous │ 42 MPa peak dynamic |
| Temperature Range | -30°C to +120°C (-22°F to +248°F) |
| Seal Material | Polyurethane (PU-90) + Hydrogenated Nitrile (HNBR) |
The Hydraulic Seal Kit Contents
| Piston Seal (PU-90) | Main pressure seal for digging forces |
| Rod Seal (HNBR) | Prevents oil leakage along cylinder rod |
| PTFE Guide Band | Reduces friction (CoF: 0.03) |
| Four-Lip Wiper (Purple PU) | Excludes >10μm particles (JIS D 4301) |
| Buffer Ring (PTFE) | Prevents extrusion at 42 MPa pressure spikes |
| O-Rings (HNBR) | Static seal corrosion resistance |
| Matches Kobelco Drawing SK200-8-Arm-CL03 | |
Key Benefits
✅ Zero Stick Drift: Maintains 34.3 MPa hydraulic pressure
✅ 42 MPa Shock Resistance: PTFE buffer rings absorb hammer drilling impacts
✅ Extended Service Life: Abrasion-resistant PU seals last 3,500+ hours in rock excavation
✅ Contaminant Defense: Four-lip wiper exceeds ISO 4406:18/16/13 cleanliness standard
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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