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Homogeneous flexible graphite film, coated on both sides with a 0.01 mm thick polymer film.
Reinforced with bonded smooth Ni foil 0.013 mm thick (material: 2.4066). For low and medium pressures.
Reinforced with 0.1 mm thick perforated reed plate (material: AISI 316). For medium and higher pressures.
Reinforced with 0,05 mm thick stainless steel foil (material: AISI 316). For low and medium pressures.
Reinforced with expanded stainless steel sheet 0.1 mm thick (material: AISI 316L, 700 g/m²). Ideal seal for large pressure changes.
Multilayered sealing material made of expanded graphite reinforced with a larger number of inserts without the use of adhesives. Suitable for higher pressures and temperatures.
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In stock
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On request
Currently in stock:
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Currently in stock:
When ordering a larger quantity, we will specify the delivery date.
Currently in stock:
When ordering a larger quantity, we will specify the delivery date.
Currently in stock:
When ordering a larger quantity, we will specify the delivery date.
Homogeneous flexible graphite film, coated on both sides with a 0.01 mm thick polymer film to increase handling strength and durability. The material resists well the loads caused by tightening of the flange joint.
Available plate thicknesses: 1.5 - 2.0 - 3.0 mm
Slab dimensions: 1000 x 1000 mm; 1500 x 1500 mm on request
| Feature | Value | Unit |
|---|---|---|
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Operating temperature
Teplotní odolnost grafitu je ovlivněna jeho čistotou - čím vyšší čistota, tím nižší oxidace (úbytek materiálu) za vyšších teplot.
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-200 to 450 | °C |
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Operating pressure
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0 to 40 | bar |
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Non-standard pressure
Vysekávaná těsnění jsou standardně dimenzovaná pro použití do 40 barů (v závislosti na typu spoje). Pro vyšší tlaky doporučujeme kovová těsnění nebo aplikaci konzultujte.
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41 to 120 | bar |
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Compressibility
V závislosti na tloušťce materiálu.
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40 - 50 | % |
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Reverse suspension
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8 - 15 | % |
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Specific gravity of the foil
0 ± 5 %
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1 | g/cm³ |
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Graphite content
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> 99 | % |
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Sulfur content
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< 750 ppm | % |
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Content of leachable chlorides
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< 40 ppm | - |
The highest temperature and pressure levels quoted do not in themselves determine the suitability of the material for a particular application. These limits are influenced by a number of factors such as flange type, bolts, seal installation and variable loads. Consequently, the maximum values and pT diagrams quoted offer only general recommendations.
For graphite seals, one of the main parameters is oxidation, which is the loss of material due to temperature and oxygen. This can cause a reduction in bolt tension, a reduction in seal pressure and ultimately lead to leaks in flange connections. The quality of graphite is determined by its purity, as higher levels of chlorides, fluorides and sulphur can increase oxidation and cause pitting corrosion. TGA analysis is used to detect oxidation by measuring weight loss. The higher the loss in TGA analysis, the lower the quality of the graphite.
In general, temperature and light exposure do not significantly affect the life of graphite materials. However, to ensure a shelf life of more than 10 years, observe the following storage conditions:
Graphite has excellent chemical resistance. It is highly resistant to most acids, bases, solvents and corrosive chemicals, except strong oxidizing agents. Its inert nature and compatibility with a wide range of chemicals ensures reliable sealing performance in harsh environments.
We can create the perfect seal for your needs, including non-standard sizes.
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