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Technical Data Sheet 355
Edition: 08/2015, supersedes all prior editions.
Please see the latest issue at www.reinz-industrial.com |
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Material
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AFM 55 is an asbestos-free gasket and insulating material. It consists of
aramide fibers and other asbestos substitutes that are resistant to high
temperatures and are processed with high-grade elastomers under
elevated pressure and temperature.
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Properties
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AFM 55 exhibits good electrical and thermal
insulating properties as well as excellent thermal resistance. In the delivered condition, AFM 55 is soft, pliable and easy to work and process. By means of special temperature
treatment or during normal use at elevated temperatures, the material to hardens and obtains its maximum mechanical strength.
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Application
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For sealing fluids and for thermal and/or electrical insulation, e.g. in hot
pressing or welding devices or for manufacturing transport rollers that are resistant to high
temperatures.
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Surfaces
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As standard, one side of AFM 55 is coated with a non-stick, high-friction layer that greatly facilitates disassembly.
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Technical Data
(nominal thickness
2.00 mm)
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| Density |
g/cm³ |
1.8 - 2.0 |
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| Ignition loss acc. to DIN 52 911 |
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< 34 |
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| Tensile strength |
acc. to ASTM F 152, across grain
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N/mm²
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> 10
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| acc. to DIN 52 910, across grain |
N/mm²
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> 8
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| Residual stress acc. to DIN 52 913 |
| heated material (2h, 200 °C) |
| 16 h, 300 °C |
N/mm² |
≈ 20
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| 16 h, 175 °C |
N/mm² |
≈ 28
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Compressibility and recovery
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| acc. to ASTM F 36, procedure J |
| compressibility |
% |
4 - 10 |
| recovery |
% |
> 50 |
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| Swelling acc. to ASTM F 146: |
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| in IRM 903 Oil (replaces ASTM Oil No. 3) |
| 5 h, 150 °C |
| increase in thickness |
% |
< 10 |
| increase in weight |
% |
< 15
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| in ASTM Fuel B |
| 5 h, room temp. |
| increase in thickness |
% |
< 10 |
| increase in weight |
% |
< 10 |
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| in water / antifreeze (50:50) |
| 5 h, 100 °C |
| increase in thickness |
% |
< 5
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| increase in weight |
% |
< 10 |
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Thermal conductivity
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of a two-sheet device similar
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to DIN 52612,
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| at 5 N/mm² surface pressure |
| fresh material (48 h, room temp. 60% rel. hum.) |
W/m·K |
≈ 0.65
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| heat-treated material (2 h, 200 °C) |
W/m·K |
≈ 0.58
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| Electrical specific resistance |
| acc. to DIN 53482, |
| at 5 N/mm² surface pressure |
| fresh material (48 h, room temp., 60% rel. hum.) |
cm |
≈ 3.7 x 109 |
| heat-treated material (2 h, 200 °C) |
cm |
≈ 1.7 x 1014 |
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| Dielectric strength |
| acc. to DIN 53481, |
| at constant voltage |
| fresh material (48 h, room temp., 60% rel. hum.) |
kV/mm |
≈ 8.5
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| heat-treated material (2 h, 200 °C) |
kV/mm |
≈ 10.0 |
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| Short-term peak temperature |
°C |
400 |
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| Maximum continuous temperature |
°C |
300 |
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| Maximum operating pressure |
bar |
100 |
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Max. continuous temperature and max. pressure must not occur
simultaneously.
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The data quoted above are valid for the material "as delivered" without
any additional treatment. In view of the countless possible
installation and operating conditions, definitive conclusions cannot be
drawn for all applications regarding the behaviour in a sealed joint.
Therefore, we do not give any warranty for technical data, as they do
not represent assured characteristics. If you have any doubt, please
contact us and specify the exact operating conditions.
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Form of delivery
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| Gaskets |
according to a drawing, dimensions supplied, or other arrangement.
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| Sheets |
1500 x 1500 mm (standard size) |
Nominal thicknesses and tolerances acc. to DIN 28091-1 (mm)
Dimensional limits within a shipment
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0.30
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±0.10
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0.50
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±0.10
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0.75
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±0.10
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1.00
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±0.10
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1.50
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±0.15
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2.00
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±0.20
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3.00
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±0.30
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Max. thickness variation in a sheet:
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| 0.1 mm for sheet thickness ≤1.00 mm, and 0.2 mm for thickness >1.00 mm |
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Sheet as a PDF document 
