AFM 34 METALL is an asbestos-free gasket material with a strong reinforcement of expanded stainless steel 1.4404 (316L) which is 0.5 mm thick. The material is physiologically safe and contains no color pigments. It is composed of aramide fibers and other asbestos substitutes which are resistant to high temperatures and are processed with high-grade elastomers under elevated pressure and temperature.

AFM 34 METALL is resistant to media such as oils, solvents, fuels, steam, saline solutions, refrigerating agents (freons), alcohols, and many others.

Due to the expanded metal mesh reinforcement, the gasket material features a number of outstanding properties as compared to conventional composite materials. AFM 34 METALL exhibits very high tensile strength, high stress and shear resistance, and is extremely easy to handle. AFM 34 METALL exhibits far lower values for hot creep than conventional composite materials.

The expanded metal mesh reinforcement permits AFM 34 METALL to cope better with higher pressures and temperatures than conventional non-reinforced materials. It is also suitable for sealing hot water and steam up to 200 °C in stationary applications and with an installation surface pressure of at least 75 N/mm². Please consult us if you have a specific application.

In spite of its expanded metal reinforcement, the gasket material exhibits high sealability with gases – a novel feature with metal-reinforced fiber gasket materials.

As standard, both sides of AFM 34 METALL are coated with a non-stick, high-friction layer that greatly facilitates disassembly. In most cases, additional surface treatment is unnecessary.
However, a graphite coating on one or both sides of the gasket is required when used with components that rotate on the gasket during assembly, e.g. in threaded couplings, radiator plugs, etc., as a low friction value is required in these cases.

UVV 61 "Gases", AD-B7 (VdTÜV) blowout-proof gasket

Density					g/cm³	≈ 2.6
Ignition loss acc. to DIN 52 911					%	< 22
Tensile strength
across grain					N/mm²	> 60
with grain					N/mm²	> 33
Residual stress acc. to DIN 52 913
16 h, 300 °C					N/mm²	≈ 42
16 h, 175 °C					N/mm²	≈ 46
Compressibility and recovery
acc. to ASTM F 36, procedure J
compressibility					%	≈ 5
recovery					%	≈ 60
Sealability against nitrogen
acc. to DIN 3535, part 6 FA					mg/(s·m)	≈ 0.05
Swelling acc. to ASTM F 146
in IRM 903 Oil (replaces ASTM Oil No. 3)
5 h, 150 °C
increase in thickness					%	< 10
increase in weight					%	< 10
in ASTM Fuel B
5 h, room temp.
increase in thickness					%	< 10
increase in weight					%	< 10
in water / antifreeze (50:50)
5 h, 100 °C
increase in thickness					%	< 5
increase in weight					%	< 5
Content of water-soluble chloride					ppm	< 100
Minimum installed surface pressure σVU/L
for sealing against helium acc. to
Reinz Test Method RPM 505:
Leakage rate 10-2 mbar·l/s·m = 0.6 cm³/min·m
at 10 bar					N/mm²	60
at 25 bar					N/mm²	80
at 50 bar					N/mm²	100
Short-term peak temperature					°C	400
Maximum continuous temperature					°C	275
for steam up to					°C	240
Maximum operating pressure					bar	300

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.

Density					g/cm³	≈ 2.45
Ignition loss acc. to DIN 52 911					%	< 24
Tensile strength
across grain					N/mm²	> 52
with grain					N/mm²	> 33
Residual stress acc. to DIN 52 913
16 h, 300 °C					N/mm²	≈ 33
16 h, 175 °C					N/mm²	≈ 43
Compressibility and recovery
acc. to ASTM F 36, procedure J
compressibility					%	≈ 5
recovery					%	≈ 60
Sealability against nitrogen
acc. to DIN 3535, part 6 FA					mg/(s·m)	≈ 0.05
Swelling acc. to ASTM F 146
in IRM 903 Oil (replaces ASTM Oil No. 3)
5 h, 150 °C
increase in thickness					%	< 10
increase in weight					%	< 10
in ASTM Fuel B
5 h, room temp.
increase in thickness					%	< 10
increase in weight					%	< 10
in water / antifreeze (50:50)
5 h, 100 °C
increase in thickness					%	< 5
increase in weight					%	< 5
Content of water-soluble chloride					ppm	< 100
Minimum installed surface pressure σVU/L
for sealing against helium acc. to
Reinz Test Method RPM 505:
Leakage rate 10-2 mbar·l/s·m = 0.6 cm³/min·m
at 10 bar					N/mm²	45
at 25 bar					N/mm²	60
at 50 bar					N/mm²	80
Short-term peak temperature					°C	400
Maximum continuous temperature					°C	260
for steam up to					°C	240
Maximum operating pressure					bar	250

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.

Density					g/cm³	≈ 2.3
Ignition loss acc. to DIN 52 911					%	< 26
Tensile strength
across grain					N/mm²	> 45
with grain					N/mm²	> 33
Residual stress acc. to DIN 52 913
16 h, 300 °C					N/mm²	≈ 25
16 h, 175 °C					N/mm²	≈ 40
Compressibility and recovery
acc. to ASTM F 36, procedure J
compressibility					%	≈ 5
recovery					%	≈ 60
Sealability against nitrogen
acc. to DIN 3535, part 6 FA					mg/(s·m)	≈ 0.05
Swelling acc. to ASTM F 146
in IRM 903 Oil (replaces ASTM Oil No. 3)
5 h, 150 °C
increase in thickness					%	< 10
increase in weight					%	< 10
in ASTM Fuel B
5 h, room temp.
increase in thickness					%	< 10
increase in weight					%	< 10
in water / antifreeze (50:50)
5 h, 100 °C
increase in thickness					%	< 5
increase in weight					%	< 5
Content of water-soluble chloride					ppm	< 100
Minimum installed surface pressure σVU/L
for sealing against helium acc. to
Reinz Test Method RPM 505:
Leakage rate 10-2 mbar·l/s·m = 0.6 cm³/min·m
at 10 bar					N/mm²	34
at 25 bar					N/mm²	45
at 50 bar					N/mm²	60
Short-term peak temperature					°C	400
Maximum continuous temperature					°C	250
for steam up to					°C	240
with metal inner eyelet (ME)
for steam up to					°C	275
Maximum operating pressure					bar	200

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"!

DIN 28091-2:
Cold creep εKSW				%	5 - 8
Cold recovery εKRW				%	2 - 4
Hot creep during service εWSW/T				%	4 - 7
Hot recovery εWRW/T				%	≈ 0.60
Recovery R				mm	≈ 0.01
Specific leakage rate λ				mg/(s·m)	< 0.1
Residual surface pressure				%	> 50
after 1000 h (in air at 100 °C)
Sealing parameters see  Table

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.