High Density Flexible Graphite Sealing Material 0.15-5.0mm Thickness 1000-1500mm Width
Premium flexible graphite sealing material with 99% carbon purity, temperature range from -200°C to 3000°C, and pressure rating up to 20MPa. Features exceptional corrosion resistance, self-lubrication, and compressive resilience. Available in widths up to 1500mm and thickness from 0.15mm to 5.0mm for industrial gaskets and high-temperature insulation applications.
Flexible graphite material, also known as expanded graphite sheet or graphite tape, is manufactured from natural graphite flakes through chemical treatment and high-temperature thermal expansion. This process creates exfoliated graphite structures with ultralow bulk density of approximately 3 kg/m³. The expanded graphite particles are compressed into rolls or sheets without binders or additives, ensuring exceptional purity and performance characteristics.
- Corrosion & Radiation Resistance: Suitable for harsh chemical and nuclear environments
- Extreme Temperature Tolerance: Stable performance from -200°C to +3000°C
- Self-Lubrication & Sealing Efficiency: Inherent lubricity and impermeability for reliable low-pressure sealing
- Compressive Resilience: Maintains structural integrity under repeated compression cycles
- Sealing Solutions: Primary material for manufacturing graphite packing rings and composite gaskets
- Composite Materials: Combined with metal sheets to create multi-layered sealing plates, customizable into complex gasket geometries
- Direct Industrial Use: Processed into thick sheets for crafting low-pressure seals or high-temperature insulation pads in industrial equipment
| Parameter | Value |
|---|---|
| Carbon Concentration | 99% |
| Sulfur Concentration | <1000ppm |
| Chlorine Concentration | <45ppm |
| Tensile Strength | 4.5MPa |
| Compressibility | >40% |
| Recovery | >10% |
| Temperature Range | -200°C to 600°C |
| Pressure Rating | 20MPa |
| Thickness Tolerance | -0.04mm to +0.04mm |
| Density Range | 0.8 to 1.25 g/cm³ |
- Width: 1000mm or 1500mm
- Coil Length: 30m, 50m, or 80m
- Sheet Thickness: 0.15-1.0mm (coils), 1.0-5.0mm (plates)
- Custom Options: Non-standard sizes, densities, or hybrid material configurations available upon request
| Parameter | Qualified Product | Top Grade | Superior Grade |
|---|---|---|---|
| Density Tolerance (<0.4 g/cm³) | ±0.10 | ±0.05 | ±0.05 |
| Density Tolerance (≥0.4 g/cm³) | ±0.07 | ±0.07 | ±0.07 |
| Tensile Strength (MPa) | ≥3.2 | ≥4.5 | ≥5.0 |
| Compression Ratio (%) | 35-55 | 35-55 | 35-55 |
| Rebound Rate (%) | ≥9 | ≥11 | ≥12 |
| Stress Relaxation Rate (%) | ≤10 | ≤10 | ≤10 |
| Ash (%) | ≤6.0 | ≤3.0 | ≤1.0 |
| Heat Loss at 450°C (%) | ≤1.0 | ≤0.5 | ≤0.5 |
| Heat Loss at 600°C (%) | ≤20 | ≤15 | ≤15 |
| Sulfur Content (ppm) | ≤1500 | ≤1000 | ≤600 |
| Chloride Content (ppm) | ≤100 | ≤50 | ≤20 |
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