Professional Sealing Solutions for Heavy Machinery
Hydraulic leaks stop projects. Whether you are rebuilding a bucket cylinder in the workshop or fixing a blown pump seal on a muddy job site, having the right O-ring on hand is critical. Victory Technology’s O-Ring Repair Kits provide a complete inventory of essential seals in one durable, portable case.
Brand-Specific Assortments:
Unlike generic “universal” kits that rarely fit perfectly, our sets are curated with the specific metric and imperial sizes used by major heavy equipment manufacturers:
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🟧 Hitachi Version (792 Pcs): Tailored for ZX / EX series hydraulic systems.
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🟨 Caterpillar (CAT) Version (751 Pcs): Fits CAT 320, 330, and E-series pumps/valves.
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🟦 Komatsu Version (782 Pcs): Matches PC-series cylinder and travel motor specs.
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⬛ Doosan / Daewoo Version (800 Pcs): Comprehensive set for DH / DX series excavators.
Material Excellence (NBR & Viton):
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Standard NBR (Nitrile): Our black NBR O-rings offer excellent resistance to mineral oils, greases, and hydraulic fluids. Ideal for standard operating temperatures (-40°C to +120°C).
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High-Temp Viton (FKM): (Optional upgrade) For engines and high-heat hydraulic circuits, offering superior chemical and heat resistance up to +200°C.
🔹 Key Features & Benefits
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✅ High Quantity (700-800+ Pcs): One box covers hundreds of repairs. You won’t run out of common sizes anytime soon.
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✅ Organized & Labeled: Every slot in the plastic case is labeled with the specific size (ID x CS) or Part Number position, saving you time searching for the right seal.
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✅ Workshop & Field Ready: The heavy-duty plastic storage case features a secure locking latch and handle, designed to be thrown in the back of a service truck without spilling.
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✅ Versatile Application: Suitable for sealing Hydraulic Pumps, Control Valves, Cylinders, Pilot Valves, and Pipe Flanges.
🧰 Technical Specifications
| Feature | Specification |
| Product Type | Hydraulic O-Ring Repair Kit (Box) |
| Compatible Brands | Hitachi, Caterpillar, Komatsu, Doosan |
| Piece Count | 751 – 800 PCS (Depending on model) |
| Material | NBR 70/90 (Standard) or Viton/FKM (High Temp) |
| Hardness | Shore A 70 / 90 (High Pressure Resistant) |
| Fluid Resistance | Hydraulic Oil, Engine Oil, Diesel, Grease |
| Packaging | Impact-Resistant Plastic Organizer Box |
❓ Frequently Asked Questions (FAQ)
Q: Are these universal sizes or OEM specific?
A: These are OEM-aligned sizes. While many O-rings are standard metric/imperial, these kits are specifically curated to include the most frequently used sizes for the specific brand (e.g., Hitachi kits emphasize JIS sizes, while CAT kits include SAE sizes).
Q: What is the difference between NBR and Viton?
A: NBR (Nitrile) is the industry standard for hydraulic oil and is cost-effective. Viton (FKM) is a premium material that handles much higher temperatures and aggressive chemicals. For most excavator hydraulics, NBR is sufficient, but Viton is better for engine components.
Q: Can I refill the box?
A: Yes! The box is reusable. As you use up specific sizes, you can simply order bulk replacement O-rings from us to refill the slots.
📦 Factory Direct Packaging (B2B)
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Packaging: 1 Kit per Shrink-Wrapped Box.
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Carton: 10 or 20 Kits per Master Carton (Heavy Duty).
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Labeling: Clear model identification (e.g., “Komatsu O-Ring Kit”).
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Customization: We can print your company logo on the box sticker for OEM orders.
🚀 Get a Factory Price Quote Now
Equip your service technicians with the best tools.
Fill out the form below for our price list on O-Ring Kits.
