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DON 2.0 |
Properties and application
GRAFILIT® SF is a gasket material with very low creep relaxation and high tightness at low bolt loading. It is suitable for almost all chemicals, in food industry and in contact with drinking water. Because of its high compressibility it is suitable for glass or enamel flanges.
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Sheet size | mm | 1000x1000 |
Thickness | mm | 1.0, 1.5, 2.0, 2.5, 3.0 |
Rolls size | ||
width | mm | 4-1000 |
length | m | 50 |
thickness | mm | 0.5, 0.8 |
other dimensions and thicknesses on request
Typical values
| ASTM F36 | % | 45 |
Recovery | ASTM F36 | % | 13 |
Stress resistance (16h, 300°C) | DIN 52913 | N/mm2 | 49 |
Permeability to nitrogen (40bar, RT) | DIN 3535/6 | mg/sm | <0.02 |
Ash content of graphite | DIN 51903 | % | <1 |
Chloride content | FSA NMG 202 | ppm | <50 |
Fluoride content | FSA NMG 203 | ppm | <50 |
Density of the graphite | DIN 28090-2 | g/cm3 | 1.0 |
Compression modulus | DIN 28090-2 | ||
At room temperature: εKSW | % | 38 | |
At elavated temperature: εWSW/300°C | % | 0.9 | |
Percentage creep relaxation | DIN 28090-2 | ||
At room temperature: εKRW | % | 5.0 | |
At elavated temperature: εWRW/300°C | % | 4.5 | |
Recovery R | DIN 28090-2 | mm | 0.088 |
Operating conditions | |||
Continuous use max. temperature* | |||
Air or oxidizing atmosphere | °C/F | 450/842 | |
Reducing or inert atmosphere | °C/F | 2500/4532 | |
Continuous use min. temperature* | °C/F | -200/-328 | |
Continuous use max. pressure* | bar/psi | 80/1160 |
* Service limits are recommended for proper sealing conditions and gasket design.
Basis