Products Description
DIN-standard industrial graphite sheets, along with graphite foil, paper, tape, and strip, are advanced sealing materials manufactured from natural graphite flakes via a two-stage process: chemical intercalation and thermal expansion. This produces exfoliated graphite structures with a bulk density of approximately 0.003g/cc. The expanded graphite is then compressed into rolls or sheets without binders, ensuring a purity level exceeding 99.8% and compliance with DIN EN 13555 for sealing applications.
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Material Purity
- Meets DIN 52900 standards for ash content (<0.2%) and sulfur content (<0.1%).
- Free of halogenated compounds, aligning with DIN EN 61249-2-21 for electronic applications.
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Thermo-Mechanical Properties
- Thermal stability from -200°C to +3000°C (DIN EN 1356 standard).
- Compressive strength of 50-80 MPa (DIN EN 13555) with <3% creep relaxation under 100 bar pressure.
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Dimensional Accuracy
- Width tolerance: ±0.5mm for 1000mm/1500mm rolls (DIN EN 13555).
- Thickness uniformity: ±5% for 0.15-5mm sheets (DIN EN ISO 4784).
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Flange Sealing
- Used in ASME B16.5/DIN EN 1092-1 flange connections, providing leak-tight seals for gas, liquid, and slurry pipelines.
- Composite variants with stainless steel inserts meet DIN EN 15149-2 for pressure equipment.
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Valve & Pump Seals
- Graphite packing rings for valves comply with DIN 3352, ensuring reliability in oil refineries and chemical plants.
- Self-lubricating properties reduce friction in pumps adhering to DIN 24256 standards.
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High-Temperature Insulation
- Thick plates (1.0-5mm) used in furnace doors and heat exchangers, meeting DIN 1709 for thermal insulation.
- Sizes:
- Rolls: 1000mm/1500mm width, 30m/50m/80m length.
- Sheets: 1000mm x 1500mm, thicknesses 0.15-5mm.
- Density: 0.8-1.25g/cm³ (customizable per DIN EN 13555).
- Surface Finish: Smooth (<Ra 0.8μm) or textured for specific grip requirements (DIN 4768).
- Certified to DIN EN ISO 9001:2015 and DIN EN 14576 for environmental management.
- Tested by TÜV for flame resistance (DIN 4102 B1) and chemical compatibility (DIN 53438).
- Available with full traceability documentation in compliance with DIN EN 10204 3.1B.
- Precision Engineering: Laser-cutting ensures ±0.1mm dimensional accuracy for complex shapes.
- Cost Efficiency: Reduces maintenance costs by 40% compared to traditional materials in continuous operation.
- Global Support: On-site installation guidance provided by engineers certified to DIN 66023.
Engineered to meet the most rigorous European industrial standards for sealing and insulation.
| 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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