AFM 33/2
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描述
产品材质:无石棉垫片,非石棉
技术参数

Material

AFM 33/2 is an asbestos-free gasket material. It is composed of aramide fibres and other asbestos substitutes which are resistant to high temperatures. These substitutes are processed with high-grade elastomers under elevated pressure and temperature.

Properties

AFM 33/2 is a gasket material with controlled swelling characteristics in oil. Despite its controlled swelling in oil and thus its particularly good conformability to sealing faces, AFM 33/2 features dimensional stability and good tensile strength. In addition, the material seals off gases well.

Application

  • to seal off hydraulic, motor, transmission and refrigerating oils and other hydrocarbons as well as air, mixtures of water and antifreeze and corrosion inhibitors.
  • for sealing joints with low sealing stress or irregular sealing faces, e.g. for covers, housings, valve covers, oil pans
  • for components which are subject to high mechanical stress
    yet require a relatively "soft" gasket.

Surfaces

The standard version of AFM 33/2 has a non-stick top and bottom layer with a high coefficient of friction. This facilitates dismantling. Additional surface treatment is unnecessary in most cases.

Technical Data
(Nominal thickness 
2.00 mm)

Density

g/cm³

1.55 - 1.75

Ignition loss acc. to DIN 52 911

%

< 40

Tensile strength

acc. to ASTM F 152

across grain

N/mm²

> 14

acc. to DIN 52 910

across grain

N/mm²

> 10

Residual stress acc. to DIN 52 913

16 h, 175 °C

N/mm²

 32

Compressibility and recovery
acc. to ASTM F 36, procedure J

compressibility

%

8 - 15

recovery

%

> 55

Sealability against nitrogen

acc. to DIN 3535, part 6 FA

mg/(s*m)

< 0.1

Swelling acc. to ASTM F 146

in IRM 903 Oil (replaces ASTM Oil No. 3)
5 h, 150 °C

increase in thickness

%

10 - 30

increase in weight

%

10 - 30

in ASTM Fuel B
5 h, RT

increase in thickness

%

10 - 30

increase in weight

%

10 - 20

Short-term peak temperature

°C

400

Maximum continuous temperature

°C

200

Maximum operating pressure

bar

120

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