Product Overview
Flexible graphite gaskets and seals are widely used in high temperature vacuum furnaces, pipe flanges, and industrial equipment where reliable sealing is required at elevated temperatures. Made from expanded graphite with excellent compressibility and resilience, our graphite gaskets provide leak-tight sealing in demanding thermal and chemical environments.
Key Features
- Excellent temperature resistance from -200°C to 450°C
- Resistant to most chemicals and corrosive media
- Good compressibility and recovery performance
- Low creep relaxation for long-term seal reliability
- Can be reinforced with stainless steel insert for higher pressure
- Custom sizes and shapes available per customer drawings
- Suitable for vacuum, gas, and liquid sealing applications
Technical Specifications
| Parameter | Unit | Value |
|---|---|---|
| Material | - | Flexible Graphite |
| Density | g/cm³ | 1.0 - 1.6 |
| Temperature Range | °C | -200 to +450 (oxidizing) |
| Temperature (Inert) | °C | up to 3000 |
| Pressure Rating | bar | up to 100 |
| pH Range | - | 0 - 14 |
| Thickness | mm | 1.0 - 5.0 |
| Max Diameter | mm | 2000 |
Applications
- Vacuum furnace door and flange seals
- Pipe flange gaskets in high temperature piping
- Heat exchanger and boiler equipment seals
- Chemical industry corrosive fluid sealing
- Automotive exhaust system gaskets
- Aerospace and defense high temperature sealing
- Semiconductor manufacturing vacuum seals
Why Choose Jincheng Graphite Gaskets?
We manufacture precision graphite gaskets and seals for industrial applications worldwide. Our flexible graphite material provides reliable sealing performance across a wide range of temperatures and media. With in-house cutting and machining capability, we can produce custom gaskets to your exact dimensions, including complex geometries and large diameters. We work with furnace manufacturers, pump and valve companies, and industrial equipment suppliers.
FAQ
Q: What is the difference between pure graphite and reinforced graphite gaskets?
A: Pure flexible graphite gaskets are suitable for general sealing applications. Reinforced gaskets include a stainless steel foil or tanged insert that provides higher mechanical strength and pressure rating, making them ideal for high-pressure flange applications.
Q: Can you produce custom gasket shapes and sizes?
A: Yes, we specialize in custom graphite gaskets. Please provide your drawings or specifications, including dimensions, thickness, and material requirements. We can produce ring gaskets, jacketed gaskets, and custom-shaped gaskets with complex geometries.
Q: How do I select the right gasket thickness?
A: Gasket thickness depends on flange surface finish and sealing requirements. Standard thickness is 1.5mm for smooth flange faces. For rougher surfaces or higher pressure applications, 2.0mm or 3.0mm thickness provides better conformability. Our technical team can help you select the optimal thickness for your application.
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