Product Overview
Carbon graphite seal rings and vanes are critical components in mechanical vacuum pumps, rotary vane pumps, and Roots blowers. Our graphite seal rings provide excellent self-lubricating performance, low friction, and long service life in dry running and oil-lubricated pump applications. Manufactured from resin-impregnated graphite for improved strength and wear resistance.
Key Features
- Excellent self-lubricating properties - no additional lubrication needed
- Low friction and wear for extended service life
- Resistant to most process gases and vapors
- Good thermal conductivity for heat dissipation
- Dimensional stability at operating temperatures
- Resin-impregnated for improved mechanical strength
- Custom sizes and geometries available
Technical Specifications
| Parameter | Unit | Standard Grade | Premium Grade |
|---|---|---|---|
| Material | - | Resin Graphite | Antimony Impregnated |
| Bulk Density | g/cm³ | 1.70 | 1.78 |
| Shore Hardness | - | 70 | 80 |
| Flexural Strength | MPa | 45 | 60 |
| Max PV Value | MPa·m/s | 10 | 15 |
| Max Operating Temp | °C | 300 | 400 |
| Hardness (Shore) | - | 70 | 80 |
| Porosity | % | <1 | <0.5 |
Applications
- Rotary vane vacuum pumps
- Roots blowers and mechanical boosters
- Liquid ring vacuum pumps
- Reciprocating compressor piston rings
- Centrifugal pump mechanical seals
- Food and pharmaceutical vacuum equipment
- Chemical process pumps and compressors
Why Choose Jincheng Graphite Seal Rings?
We manufacture precision carbon graphite seal rings, vanes, and mechanical seal components for pump and compressor manufacturers. Our graphite materials are impregnated with resin or antimony to provide excellent wear resistance and low porosity for demanding sealing applications. With precision grinding capability, we produce seal faces with ultra-flat finish for reliable sealing performance.
FAQ
Q: What is the difference between resin-impregnated and antimony-impregnated graphite?
A: Resin-impregnated graphite is suitable for general sealing applications with good wear resistance. Antimony-impregnated graphite offers higher temperature capability and better performance in high-pressure and high-speed applications, making it ideal for heavy-duty mechanical seals.
Q: Can you produce custom seal ring geometries?
A: Yes, we specialize in custom graphite seal components. Please provide your drawings or specifications, including inner diameter, outer diameter, thickness, and any special features. We can produce rings, vanes, faces, and complex geometries to your exact requirements.
Q: How do I select the right graphite grade for my pump application?
A: Grade selection depends on operating temperature, pressure, speed, and media. Our technical team can help you select the optimal graphite grade based on your pump type, operating conditions, and process fluid. Contact us with your application details for a recommendation.
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