Products Description
1.8g/cm³ High-Density Flexible Graphite Sheets
Flexible graphite products include sheets, foils, papers, tapes, and strips. These materials are manufactured through chemical intercalation of natural flake graphite followed by high-temperature exfoliation, forming vermicular structures with 0.003g/cm³ density. The expanded graphite is calendared into binder-free rolls, then processed to achieve:
- 1.8g/cm³ controlled density
- 99%+ purity
- Chemical inertness
- Radiation resistance
- Thermal stability (-200°C to +650°C)
- Compression recovery
- Self-lubricating properties
- Gas-tight sealing
These features make high-density sheets ideal for demanding sealing applications. Composite options with metal reinforcement available.
Key Applications:
- High-pressure packing rings
- Custom-shaped gaskets for industrial machinery
- Thick insulation pads for high-temperature systems
- Sealing components for chemical processing equipment
Technical Specifications:
- Density: 1.8g/cm³ (customizable from 0.8-2.0g/cm³)
- Roll Dimensions:
- Width: 1000mm / 1500mm
- Length: 30m / 50m / 80m
- Sheet Size: 1000x1000mm / 1500x1500mm
- Thickness Range:
- Rolls: 0.15-1.0mm
- Sheets: 1.0-5.0mm
- Material Options: Pure graphite / metal-reinforced composites
Item | Standard Value |
C concentration | 99% |
S concentration | <1000ppm |
chlorine concentration | <45ppm |
tensile strength | 4.5MPa |
compressibility | >40% |
recovery | >10% |
Temperature | -200ºC-600ºC |
Pressure | 20MPa |
Terence of Thickness | -0.04mm~+0.04mm |
Terence of Dimension | In accordance with your Gasket size |
Terence of Density | -0.06~g/cm3+0.06gcm3 |
Grades Separate :JB/T53392-1999 Mechanical Data | Qualified product | Top Grade | Superior Grade |
Density Tolerance g/cm3 | <0.4 | ±0.10 | ±0.05 |
≥0.4 | ±0.07 |
Tensile Strength MPa | ≥3.2 | ≥4.5 | ≥5.0 |
Compression Ratio % | 35~55 |
Rebound Rate % | ≥9 | ≥11 | ≥12 |
Stress relaxation rate % | ≤10 |
Ash % | ≤6.0 | ≤3.0 | ≤1.0 |
Heat loss on ignation % | 450ºC | ≤1.0 | ≤0.5 |
600ºC | ≤20 | ≤15 |
Sulphur content | ≤1500ppm | ≤1000ppm | ≤600ppm |
Chloride content | ≤100ppm | ≤50ppm | ≤20ppm |
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