Anqing Cling-Seal Manufactory Co., Ltd.
A Sealing Material Partner You Can Rely On
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Products Description
Product Range
Flexible graphite solutions encompass sheets, foil, tape, strips, and paper-form variants, collectively known as expanded graphite materials.
Manufacturing Process
Natural graphite flakes undergo chemical intercalation followed by rapid thermal expansion at 800-1000°C, creating exfoliated graphite particles with a bulk density of ~3 kg/m³. These expanded particles are mechanically compacted into continuous coils or sheet formats without adhesives or additives, ensuring 99%+ purity.
Key Advantages
Environmental Stability: Resists chemical degradation, ionizing radiation, and thermal extremes (-200°C to +3000°C)
Mechanical Performance: Maintains 85%+ compression recovery rate after cyclic loading
Interface Compatibility: Combines with stainless steel/copper sheets via lamination for hybrid structural materials
Industrial Applications
Dynamic Sealing Systems: Primary material for rotating shaft packing rings in pumps/valves
Composite Gasket Fabrication: Metal-reinforced multilayer sheets die-cut into custom flange gaskets
Direct-Form Components: Thickened plates (3-5mm) processed into low-pressure seals or thermal barriers
Standard Specifications
| Parameter | Coil Format | Sheet Format |
|---|---|---|
| Width | 1000/1500mm | 1000/1500mm |
| Length | 30/50/80m | N/A |
| Thickness | 0.15-1.0mm | 1.0-5.0mm |
| Density | 0.8-1.25 g/cm³ | 0.8-1.25 g/cm³ |
Note: Custom dimensional configurations and material hybrids available for OEM requirements.
This engineered material series addresses critical sealing challenges across energy generation, process industries, and advanced manufacturing sectors through its unique combination of thermal conductivity (5-150 W/m·K) and structural adaptability.
| 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 |
| 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 | |
