Products Description
Eco-Friendly Asbestos-Free Flexible Graphite Gasket
Flexible graphite materials consist of sheets, foils, papers, tapes, and strips. These materials are crafted by treating natural graphite flakes with chemical processes and then subjecting them to high - temperature exfoliation. This process creates worm - like graphite structures that have a density of approximately 0.003g/cm³. The expanded graphite is rolled into coils without the use of binders or fillers, ensuring the following characteristics:
- An eco - friendly composition, free from asbestos and other harmful substances
- A high level of purity, reaching over 99%
- Resistance to chemicals and corrosion
- The ability to withstand radiation
- Thermal stability across a wide range, from - 200°C to +650°C
- Excellent compression recovery properties
- Self - lubricating features
- A gas - tight sealing performance
These qualities make our flexible graphite gaskets an ideal choice for low - pressure sealing applications in environmentally sensitive industries. Additionally, composite materials can be made by laminating the graphite with metal substrates.
Product Applications:
- It serves as the core material for packing rings in pumps and valves.
- When combined with metal sheets, it forms composite gaskets that can be die - cut into any custom shape.
- Thick - cut sheets are used for manufacturing low - pressure seals and high - temperature insulation components.
Customizable Specifications:
- Roll Dimensions:
- Width: 1000mm or 1500mm (custom widths can be provided)
- Length: 30m, 50m, or 80m (cut - to - length service is available)
- Sheet Sizes: 1000mm x 1000mm or 1500mm x 1500mm (non - standard sizes can be accommodated)
- Thickness Range:
- Coils: 0.15mm to 1.0mm
- Sheets: 1.0mm to 5.0mm
- Density: 0.8 - 1.25g/cm³
Available in pure graphite or metal - reinforced grades, with eco - friendly certifications upon request.
| 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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