AFM 37
Maximum operating pressures at various temperatures and with various media (guiding values)
Edition: 08/2015, supersedes all prior editions.
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Max. operating pressure (bar) 1)  with medium
Temperature
(°C)		 Thickness
(mm)
Water, steam, aqueous solutions GasesAcids 3), alkaline solutions 3), amines, acid derivativesOils, greasesFuels, solvents
-100 2)
1
-
16
-
40
25
2
-
10
-
25
16
3
-
6
-
10
10
-50
1
30
40
16
64
40
2
20
25
10
40
25
3
10
16
6
25
16
0
1
90
64
40
100
64
2
50
40
25
64
40
3
25
25
16
40
25
50
1
90
64
40
100
64
2
50
40
25
64
40
3
25
25
16
40
25
100
1
50
40
25
64
40
2
25
25
16
40
25
3
16
16
10
25
16
150
1
10
25
16
40
25
2
6
16
10
25
16
3
2
10
6
16
10
200
1
-
16
-
25
10
2
-
10
-
16
6
3
-
6
-
10
2
250
1
-
-
-
10
-
2
-
-
-
6
-
3
-
-
-
2
-
The data quoted above are valid for the material "as delivered" without any additional treatment and with sufficient surface pressure, e.g. according to DIN 28 090ff. In view of the countless possible gasket designs as well as 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.
1)
It is possible that far higher pressures are permitted for flanges with projections and recesses or grooves and tongues. Please consult us in individual cases, specifying the exact sealing conditions.
2)
Use at temperatures below -50 °C is possible, if surface pressure is not less than approx. 15 N/mm² in liquids or 30 N/mm² in gases (internal pressure must be taken into account). In addition, the gasket must not be subjected to bending or flexing stresses. At temperatures below -100 °C, operating pressures may not be higher than the max. values given for -100 °C.
3)
With strong acids or alkaline solutions such as hydrochloric acid or caustic potash solution, and temperatures above 50 °C, tests under real operating conditions must be conducted. AFM 37 is not resistant to nitric acid above 20 %. In this case, we recommend using gaskets made of REINZOFLON E (PTFE); please refer to Technical Data Sheet TDS 480.
AFM 37
 
  Water, steam, aqueous solutions
  Temperature (°C)
 
Thickness 1 mm2 mm3 mm
 
  Gases
  Temperature (°C)
 
Thickness 1 mm2 mm3 mm
 
  Acids 3), alkaline solutions 3), amines, acid derivatives
  Temperature (°C)
 
Thickness 1 mm2 mm3 mm
 
  Oils, greases
  Temperature (°C)
 
Thickness 1 mm2 mm3 mm
 
  Fuels, solvents
  Temperature (°C)
 
Thickness 1 mm2 mm3 mm
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