Automotive Turbocharger Graphite Sealing Sheet
Products Description
Flexible graphite-based products include sheets, foils, papers, tapes, and strips. These materials are produced through a two-step process: natural flake graphite undergoes chemical intercalation followed by high-temperature exfoliation, creating vermicular graphite structures with ~0.003g/cm³ density. The binder-free expanded graphite is then calendared into rolls, offering:
- 99.5%+ purity
- Sulfuric acid resistance
- Thermal cycling stability (-200°C to +650°C)
- 40% compression recovery rate
- Graphitic lubricity
- Helium leak rate <1x10⁻⁹ mbar·L/s
Ideal for turbocharger applications requiring:
- Exhaust manifold sealing
- Turbine housing gaskets
- Wastegate sealing components
- Intercooler connections
Custom Manufacturing Capabilities:
- Die-cut gaskets with ±0.1mm precision
- Laser-cut profiles for complex geometries
- Metal-reinforced composites for high-pressure applications
- High-temperature coatings for oxidation resistance
Turbocharger-Specific Specifications:
- Roll Width: 1000mm / 1500mm (custom widths up to 2000mm)
- Thickness Range: 0.15-1.0mm (flexible) / 1.0-3.0mm (rigid)
- Density: 1.0-1.25g/cm³ (optimized for turbocharger pressures)
- Temperature Rating: -200°C to +650°C (continuous operation)
Available in pure graphite or with stainless steel mesh reinforcement
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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