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Material |
AFM 33/2 is an asbestos-free gasket material. It is composed of aramide fibres and other asbestos substitutes which are resistant to high temperatures. These substitutes are processed with high-grade elastomers under elevated pressure and temperature. |
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Properties |
AFM 33/2 is a gasket material with controlled swelling characteristics in oil. Despite its controlled swelling in oil and thus its particularly good conformability to sealing faces, AFM 33/2 features dimensional stability and good tensile strength. In addition, the material seals off gases well. |
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Application |
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Surfaces |
The standard version of AFM 33/2 has a non-stick top and bottom layer with a high coefficient of friction. This facilitates dismantling. Additional surface treatment is unnecessary in most cases. |
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Technical Data |
Density |
g/cm³ |
1.55 - 1.75 |
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Ignition loss acc. to DIN 52 911 |
% |
< 40 |
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Tensile strength |
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acc. to ASTM F 152 |
across grain |
N/mm² |
> 14 |
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acc. to DIN 52 910 |
across grain |
N/mm² |
> 10 |
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Residual stress acc. to DIN 52 913 |
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16 h, 175 °C |
N/mm² |
32 |
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Compressibility and recovery |
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compressibility |
% |
8 - 15 |
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recovery |
% |
> 55 |
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Sealability against nitrogen |
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acc. to DIN 3535, part 6 FA |
mg/(s*m) |
< 0.1 |
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Swelling acc. to ASTM F 146 |
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in IRM 903 Oil (replaces ASTM Oil No. 3) |
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increase in thickness |
% |
10 - 30 |
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increase in weight |
% |
10 - 30 |
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in ASTM Fuel B |
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increase in thickness |
% |
10 - 30 |
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increase in weight |
% |
10 - 20 |
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Short-term peak temperature |
°C |
400 |
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Maximum continuous temperature |
°C |
200 |
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Maximum operating pressure |
bar |
120 |
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