AFM 37/8
Technical Data Sheet 37/8
Edition: 08/2015, supersedes all prior editions.
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REINZ-AFM 37/8 is an asbestos-free gasket 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.

REINZ-AFM 37/8 is a very ecomomical gasket material. It exhibits good thermal/mechanical strength, is highly conformable, and is suitable for sealing oils and other liquids.

For sealed joints that are subjected to low or medium mechanical stress.

As standard, both sides of AFM 37/8 are coated with a non-stick, high-friction layer that greatly facilitates disassembly. In most cases, additional surface treatment is unnecessary.

Technical Data
(nominal thickness
2.00 mm)
Density g/cm³ 1.7 - 1.9

Ignition loss acc. to DIN 52 911 % < 38

Tensile strength
acc. to ASTM F 152, across grain N/mm² > 7
acc. to DIN 52 910, across grain N/mm² > 5

Residual stress acc. to DIN 52 913
16 h, 175 °C N/mm² ≈ 25

Compressibility and recovery
acc. to ASTM F 36, procedure J
compressibility % 8 - 15
recovery % > 50

Sealability against nitrogen
acc. to DIN 3535, Part 6 FA mg/(s·m) < 0.1

Swelling acc. to ASTM F 146

in Oil IRM 903 (replaces ASTM Oil No. 3)
5 h, 150 °C
increase in thickness % < 10
increase in weight % < 15

in ASTM Fuel B
5 h, room temp.
increase in thickness % < 10
increase in weight % < 15

in water / antifreeze (50:50)
5 h, 100 °C
increase in thickness % < 10
increase in weight % < 15

Short-term peak temperature °C 300

Maximum continuous temperature         °C 200

Maximum operating pressure bar 60

Max. continuous temperature and max. pressure must not occur simultaneously, please refer to the table entitled "Max. operating pressures at various temperatures and with various media"

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.

Form of delivery
Gaskets according to a drawing, dimensions supplied, or other arrangement.

Sheets 1500 x 1500 mm (standard size)

Nominal thicknesses and tolerances acc. to DIN 28091-1 (mm)
Dimensional l
imits within a shipment


Max. thickness variation in a sheet:
0.1 mm for sheet thickness ≤1.00 mm, and 0.2 mm for thickness >1.00 mm