Product Overview
Flexible graphite gaskets and sealing rings are widely used in valves, flanges, and pipe connections in chemical, petrochemical, and power industries. With excellent corrosion resistance, high temperature stability, and conformable sealing properties, our graphite gaskets provide reliable leak-tight sealing in demanding process environments where other gasket materials fail.
Key Features
- Excellent corrosion resistance to most chemicals
- High temperature resistance from -200°C to +550°C
- Conformable and compressible for reliable sealing
- No aging or hardening over time
- Resistant to creep and relaxation
- Available with or without metal inserts
- Custom shapes and sizes available
Technical Specifications
| Parameter | Unit | Value |
|---|---|---|
| Material | - | Expanded Flexible Graphite |
| Density | g/cm³ | 0.8 - 1.1 |
| Compressibility | % | 35 - 55 |
| Recovery | % | ≥15 |
| Max Temperature (Oxidizing) | °C | 450 |
| Max Temperature (Inert) | °C | 3000 |
| PH Range | - | 0 - 14 (excluding strong oxidizers) |
| Thickness | mm | 1.5 - 5.0 |
Applications
- Valve stem and body sealing
- Pipe flange gaskets
- Heat exchanger and vessel sealing
- Chemical process industry piping
- Petrochemical and refinery service
- Power industry boiler and turbine seals
- High temperature and corrosive media service
Why Choose Jincheng Graphite Gaskets?
We manufacture precision flexible graphite gaskets, sealing rings, and valve packing for industrial sealing applications. Our gaskets are produced from high-purity expanded graphite, available in pure form or with metal core inserts for added strength. We offer standard flange gasket sizes as well as custom shapes for specific valve and equipment requirements.
FAQ
Q: What is the difference between pure graphite gaskets and metal-reinforced gaskets?
A: Pure flexible graphite gaskets are fully conformable and ideal for smooth flanges and low-pressure applications. Metal-reinforced gaskets have a stainless steel or tin-plated steel core insert that provides additional radial strength and blowout resistance, making them suitable for higher pressure and temperature service.
Q: Can you produce custom gasket shapes?
A: Yes, we specialize in custom graphite gaskets and sealing rings. Please provide your drawings or gasket specifications, including dimensions, thickness, and any special requirements. We can produce gaskets in various shapes including oval, oval-oblong, and custom geometries.
Q: What chemicals are graphite gaskets compatible with?
A: Flexible graphite is compatible with most acids, alkalis, solvents, oils, and gases across the full pH range 0-14, except strong oxidizing media such as concentrated nitric acid, hot concentrated sulfuric acid, and bromine. Please consult us for specific chemical compatibility questions.
Hot Tags: graphite gasket, flexible graphite, valve gasket, flange gasket, seal ring, graphite sealing, high temp gasket, corrosion resistant gasket, industrial sealing, carbon graphite parts for vacuum furnaces, graphite electrodes for vacuum furnaces, graphite heating elements vacuum furnace, graphite insulators for vacuum furnaces, high temperature vacuum graphite parts, vacuum furnace graphite seals
