| Customization: | Available |
|---|---|
| Application: | Chemical Industry, Metallurgical Industry, Petrochemical Industry |
| Carbon Content: | High-Carbon |
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Key Features:
- High Temperature resistance
- Excellent compression resistance
- Superior chemical stability (resistant to most acids, alkalis, and organic solvents)
- Flexible sealing
- Customizable sizes
10 Reasons to Use Flexible Graphite
Thanks to its structure, which provides it with the remarkable properties described below, the primary use for flexible graphite is in the sealing sector.
Compressibility: Flexible graphite can be compressed to a maximum density limit of 2.25 (ratio between mass & volume). The choice of initial densification is a major factor in the optimization of the final product's characteristics.
Resiliency: Flexible graphite has a capacity for resiliency of about 10% in volume, making it possible to maintain seal performance over a broad temperature range.
Creep/relaxation: Flexible graphite has a very low creep rate in its service temperature range and holds up to high pressures.
Temperature resistance: In a reducing or inert atmosphere, flexible graphite retains its characteristics over a broad range of temperatures, from -196°C to 2500°C (-320.8°F to 4532°F) (sublimation temperature = 3500°C/6332°F). In the presence of oxygen, graphite forms CO or CO2 from 500°C to 550°C (932°F to 1022°F) upwards for high temperature grades. The speed of oxidation depends on the surface in contact with the oxidant object.
Aging: Flexible graphite is one of the non-metallic materials that is least affected by aging. This property is not influenced by temperature.
Radiation performance: Flexible graphite resists aging from high levels of radiation: no visible effect at 10-22 neutron/cm2 .
Chemical inertness: Flexible graphite, which contains no binders, withstands most chemicals, such as mineral acids and solvents.
Lubrication: Flexible graphite is self-lubricating and has a low coefficient of friction (less than 0.10 with steel).
Processing: Flexible graphite is easy to cut using conventional manufacturing equipment/techniques.
Removability: Flexible graphite adheres very little on sealing surfaces.
Applications:
Available in standard grades or can be reinforced with metal inserts for enhanced strength. OEM specifications and special sizes accommodated.
Why Choose Us?
✓ 20+ years graphite product manufacturing experience
✓ Strict quality control with batch testing
✓ Competitive factory-direct pricing
✓ Fast sample service & worldwide shipping
Contact us today for your graphite sealing solutions!
Specifications of Flexible Graphite
| Item | Data |
| Density(g/cm3) | 1 |
| Thickness Tolerance(MM) | <1±0.03;1-1.5±0.05;>1.5±0.1 |
| Flexural Strength(MPa) | ≥4.2 |
| Compressing Molulus(%) | 35~55 |
| Rebounding Molulus(%) | ≥9 |
| Sulfur Content(PPM) | ≤1200 |
| Chlorine Content(PPM) | ≤100 |
| Carbon Content(%) | ≥95 |
| ASH(%) | ≤100 |
| Specification | A | B | C | D |
| Carbon Content(%) | 99 | 99 | 99 | 99 |
| Sulfur Content(PPM) | ≤500 | ≤1000 | ≤1300 | ≤1500 |
| Chlorine Content(PPM) | ≤35 | ≤40 | ≤45 | ≤50 |
| Thickness Tolerance(MM) | <1(±0.03);1-1.5(±0.05);>1.5(±0.1) | |||
| Compressing Modulus(%) | ≥40(when density is 1.0 g/cm3) | |||
| Rebounding Modulus(%) | ≥10(when density is 1.0 g/cm3) | |||
We stand at the forefront of the carbon and graphite machining industry. We invest our time in ensuring precision, efficiency, and quality in every graphite part. Thanks to our advanced machines and talented workforce. They enable us to produce complex products with the utmost accuracy.
| Property | KBD-5 | KBD-6 | KBD-7 | KBD-7B | KBD-8 | Unit |
| Apparent Density | 1.85 | 1.90 | 1.82 | 1.82 | 1.90 | g/cm3 |
| Max Grain Size | 13-15 | 8-10 | 8-10 | 13-15 | 8-10 | µm |
| Ash value | ≤500 | ≤500 | ≤500 | ≤500 | ≤500 | ppm |
| Specific Electrical Resistivity | 8-10 | 8-9 | 11-13 | 11-13 | 11-13 | μΩm |
| Flexural Strength | 46 | 55 | 51 | 59 | 60 | Mpa |
| Compressive Strength | 85 | 95 | 115 | 121 | 135 | Mpa |
| Shore Hardness | 48 | 53 | 65 | 70 | 70 | HSD |
| Thermal Expansion (room temperature to 600ºC) | 4.75 | 4.8 | 5.8 | 5.8 | 5.85 | 10-6/ºC |
| Property | KBG-4 | KBG-5 | Unit |
| Apparent Density | ≥1.80 | ≥1.85 | g/cm3 |
| Ash value | ≤500 | ≤500 | ppm |
| Shore Hardness | ≥40 | ≥45 | HSD |
| Specific Electrical Resistivity | ≤12 | ≤12 | μΩm |
| Flexural Strength | 38 | 41 | Mpa |
| Compressive Strength | 81 | 87 | Mpa |
| Max Grain Size | 25 | 25 | μm |
| Property | TSK | GSK | Unit |
| Apparent Density | ≥1.70 | ≥1.72 | g/cm3 |
| Max Grain Size | ≤2 | ≤0.8 | mm |
| Specific Electrical Resistivity | 8-10 | ≤8.5 | μΩm |
| Flexural Strength | ≥12.5 | ≥15 | Mpa |
| Compressive Strength | ≥28 | ≥35 | Mpa |
| Porosity | ≤24 | ≤20 | % |
| Ash value | ≤0.3 | ≤0.3 | % |
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