Restore the hydraulic integrity and striking efficiency of your Epiroc / Atlas Copco HB 5800 with the Merit Premium Seal Kit. The HB 5800 is a heavy-weight champion in the demolition world, and its internal sealing system must withstand extreme pressure fluctuations and high thermal loads. This kit is specifically engineered to stop hydraulic oil leaks and prevent nitrogen gas loss, ensuring your hammer operates at its full 5.8-ton potential.
Product Specifications
| Feature | Details |
|---|---|
| Product Name | Hydraulic Seal Kit / Kit Vedação |
| Part Number | 3363 1212 24 / 3363121224 |
| Compatible Model | Epiroc / Atlas Copco HB 5800 |
| Material | Premium M-Polyurethane & High-Temp Viton |
| Compatibility | Standard and Eco-friendly Hydraulic Fluids |
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Why Choose the Merit Seal Kit for the HB 5800?
The HB 5800 generates massive impact force, which creates intense heat and pressure spikes within the cylinder. Standard aftermarket seals often fail prematurely. The Merit 3363 1212 24 kit is designed for durability:
1. Dynamic Sealing Performance
Our main piston seals are crafted from reinforced polyurethane with high elastic memory. This allows the seals to maintain a perfect contact surface with the piston even at high operating temperatures, preventing internal oil bypass and maintaining consistent hitting power.
2. Superior Gas Retention
A hydraulic breaker is only as strong as its nitrogen charge. Our kit includes specialized Gas Seals for the back head that are engineered to be impermeable, reducing the frequency of nitrogen refills and preventing “soft hitting” during long shifts.
3. Protection Against External Debris
In heavy demolition and quarrying, dust and stone fragments are constant threats. This kit features high-performance Excluders and Wipers that effectively clean the piston rod on every stroke, protecting the internal cylinder bore from abrasive wear and scoring.
What’s Included in the 3363 1212 24 Kit?
This is a comprehensive repair solution for a professional rebuild:
- Main Piston Seals: For high-frequency dynamic pressure.
- Buffer & Step Seals: Designed to dampen pressure spikes.
- Heavy-Duty Rod Wipers: To keep the internal system free of contaminants.
- Nitrogen Gas Seals: For the accumulator and back head assemblies.
- Static O-Rings & Back-up Rings: For the valve body and control block.
Maintenance Tip: When to Reseal your HB 5800?
To prevent catastrophic failure of the piston or cylinder, we recommend a full seal replacement:
- Every 600–800 Hours: As part of a preventative maintenance schedule.
- Visible Leaks: If oil is running down the tool (chisel) or leaking from the housing.
- Loss of Power: If the hammer strikes irregularly or feels weaker than usual.
- Oil Discoloration: If your hydraulic oil appears foamy, it may indicate nitrogen is leaking into the oil circuit through worn seals.
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