AFM 34
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 derivatives
Oils, greasesFuels, solvents
-100 2)
1
-
25
-
40
25
2
-
16
-
25
16
3
-
10
-
10
10
-50
1
100
64
25
80
64
2
64
40
16
64
40
3
40
25
10
40
25
0
1
125
100
40
150
80
2
90
64
25
100
64
3
64
40
20
64
40
50
1
125
100
40
150
80
2
90
64
25
100
64
3
64
40
20
64
40
100
1
110
90
30
120
75
2
75
60
20
90
50
3
50
30
16
50
25
150
1
90
70
25
90
50
2
50
50
16
70
30
3
30
25
10
30
16
200
1
40
40
-
64
25
2
25
25
-
35
16
3
16
10
-
16
10
250
1
-
10
-
40
-
2
-
6
-
16
-
3
-
2
-
10
-
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 & 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, the data in the table "AFM 34 – Resistance to chemical media" should be observed.
If the material is not resistant to the medium in question, we recommend using gaskets made of REINZOFLON E (PTFE); please refer to Technical Data Sheet TDS 480.
 
  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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