![]( "AFM26")
产品名称：AFM26
产品材质：无石棉垫片，非石棉
产品应用：阀门管道
产品认证：
技术参数：
| Material |
AFM 26 is composed of a pegged and galvanized steel core. An asbestos-free soft material compound is applied to both sides of the core which contains aramide fibres, inorganic fillers and high-grade elastomers. |
| Properties |
In spite of the metal reinforcement which gives the material the mechanical stability required and good stress resistance, AFM 26 is characterized by excellent compressibility and recovery. Thus, AFM 26 conforms very well to sealing faces and compensates even major surface irregularities.
The moderately priced material is resistant to oils and fuels, etc. It is also suitable for sealing off hot water and steam up to approx. 200 °C in stationary processes and at a surface pressure at assembly of at least 50 N/mm². In this case, AFM 26 outperforms conventional fibre gaskets. Please consult us for any definite application.
In comparison to graphite gaskets, the material is easy to assemble and handle. |
| Application |
- for sealing joints which are exposed to high mechanical stress, e.g. intake manifolds, cast iron oil pans, valve covers, transmission flanges and high-pressure pumps
- for irregular sealing faces and/or lightweight components with low pressure and relatively high thermal stress
- for sealing off hot water and steam in pipeline flanges up to outer diameters of 500.
|
| 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 1.25 mm) |
Weight per surface unit |
kg/m² |
3.50 |
| Residual stress acc. to DIN 52 913 |
| 16 h, 300 °C |
N/mm² |
> 38 |
| 16 h, 175 °C |
N/mm² |
> 45 |
Compressibility and recovery
acc. to ASTM F 36, procedure J |
| compressibility |
% |
9 - 17 |
| 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 |
| increase in thickness |
% |
< 7 |
| Short-term peak temperature |
°C |
400 |
| Maximum continuous temperature |
°C |
300 |
| for steam up to |
°C |
200 |
| Operating pressure maximum |
bar |
250 |
Surface pressure
maximum at 300 °C |
N/mm² |
75 |
