AFM20
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应用:
发动机,油泵,水泵,压缩机
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描述
产品材质:非石棉,无石棉垫片
技术参数
Material AFM 20 is composed of a pegged and galvanized steel core. An asbestos-free soft material compound is applied to both sides of the core containing aramide fibres, inorganic fillers and high-grade binder elastomers.
Properties AFM 20 shows good stress resistance and conforms well to sealing faces.
Application For cylinder head gaskets in mid-range internal combustion engines, for other sealing joints exposed to mechanical and thermal stress, e.g. intake and exhaust manifolds, transmission flanges and high-pressure pumps.
Surfaces Special coatings applied over the entire surface or parts thereof are available for special applications, e.g. an anti-stick coating on a PTFE basis (also possible on materials in roll form) or a QJ coating on a silicone basis which improves micro-sealing (only available as a finished gasket). Screen printing with various elastomers is also possible.
Technical Data 
(Nominal thickness 1.30 mm)
Weight per surface unit kg/m²  3.7
Residual stress acc. to DIN 52 913
16 h, 300 °C N/mm² > 37
Compressibility and recovery
acc. to ASTM F 36, procedure J
compressibility % 6 - 14
recovery % > 55
Swelling acc. to ASTM F 146
in IRM 903 Oil (replaces ASTM Oil No. 3)
5 h, 150 °C
increase in thickness % < 10
in water / antifreeze (50:50) 
5 h, 100 °C C
increase in thickness % < 5
Operating temperature
maximum °C 400
Surface pressure
maximum at 300 °C N/mm² 100
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