DANA DANA
Gasket properties
AFM, CHEMOTHERM, and spiral-wound graphite gaskets according to DIN 2505 V 1/86
(= AD-B7 6/86), DIN 2505 E 4/90, and ANSI-ASME VIII
Edition: 10/2016, supersedes all prior editions.
 Sheet as a PDF document safe/print
Gasket material
or gasket

(minimum width
 bD ≥ 15 mm)
Gasket
thickness
(mm)

Physical
state
of
medium

DIN 2505 V 1/86
(= AD-B7 6/86)
DIN 2505 E 4/90
ko x KD
(N/mm)
k1
(mm)
σVU 1)
(N/mm2)
σVO 2)
(N/mm2)
m 3)

σBO 4) in N/mm2 at:

100°C 150°C 200°C 250°C 300°C 400°C
AFM 30 2,0 liquid
gaseous
12 bD 5)
25 bD
2,0 bD 12
25
150 2,0     30      
AFM 31 2,0 liquid
gaseous
10 bD
20 bD
2,0 bD 10
20
100 2,0   40 15      
AFM 32/2 2,0 liquid
gaseous
25 bD
50 bD
2,5 bD 25
50
160 2,5     50      
AFM 34 0,56) liquid
gaseous
20 bD
35 bD
2,0 bD 20
35
250 2,0 140 100 90 30    
  1,07) liquid
gaseous
20 bD
35 bD
2,0 bD 20
35
220 2,0 120 90 80 30    
  2,0 liquid
gaseous
15 bD
30 bD
2,0 bD 15
30
180 2,0 100 70 60 20    
  3,0 liquid
gaseous
12 bD
25 bD
2,0 bD 12
25
160 2,0 90 50 40 12    
AFM 34 METALL 2,0 liquid
gaseous
20 bD
40 bD
2,5 bD 20
40
220 2,5 150 100 75 30    
AFM 34 CO ME 2,0 liquid
gaseous
15 bD
25 bD
2,2 bD 15
25
200 2,2 100
100
80      
AFM 34 METALL/ME 2,0 liquid
gaseous
30 bD
55 bD
2,8 bD 30
55
240 2,8     80      
AFM 37 and
AFM 33/2
2,0 liquid
gaseous
15 bD 5)
35 bD
2,2 bD 15
35
150 2,2     50      
AFM 38 and
AFM 39/2
2,0 liquid
gaseous
10 bD
30 bD
2,0 bD 10
30
80 2,0 55 35 10      
AFM 44 2,0 liquid
gaseous
15 bD
35 bD
2,0 bD 15
35
170 2,0 100
70
60  20    
CHEMOTHERM SPE 2,0 liquid
gaseous
20 bD
30 bD
2,5 bD 20
30
150 2,5     140   140  
Spiral-wound
graphite gasket
approx.
4,6
liquid
gaseous
30 bD
50 bD
4,0 bD 30
50
350 4,0 320 300 250   200 150

Gasket material
or gasket

(minimum width
 bD ≥ 15 mm)    
Gasket
thickness
(mm)

Physical
state
of
medium

ANSI - ASME VIII
y 1)
(N/mm2)

m 3)

AFM 30 2,0 liquid
gaseous
12
25
2,0
AFM 31 2,0 liquid
gaseous
10
20
2,0
AFM 32/2 2,0 liquid
gaseous
25
50
2,5
AFM 34 0,56) liquid
gaseous
20
35
2,0
  1,07) liquid
gaseous
20
35
2,0
  2,0 liquid
gaseous
15
30
2,0
  3,0 liquid
gaseous
12
25
2,0
AFM 34 METALL 2,0 liquid
gaseous
20
40
2,5
AFM 34 CO ME 2,0 liquid
gaseous
15
25
2,2
AFM 34
METALL/ME
2,0 liquid
gaseous
30
55
2,8
AFM 37 and
AFM 33/2
2,0 liquid
gaseous
15
35
2,2
AFM 38 and
AFM 39/2
2,0 liquid
gaseous
10
30
2,0
AFM 44 2,0 liquid
gaseous
15
35
2,0
CHEMOTHERM SPE 2,0 liquid
gaseous
20
30
2,5
Spiral-wound
graphite gasket
approx.
4,6
liquid
gaseous
30
50
4,0

1) σVU = Minimum installed pressure (adaption) at room temperature (RT)

2) σVO = Maximum installed pressure at RT

3) m = Ratio of "Minimum gasket pressure under operating conditions σBU " to "Operating pressure = Internal pressure pi ", thus: m = σBU/pi

4) σBO = Maximum gasket pressure under operating conditions at various temperatures

5) bD = Effective sealing width in mm

6) Rz 16 µm

7) Rz 25 µm
© VICTOR REINZ 2012
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