Sichem® S11 is a gasketing sheet made from biaxially oriented modified PTFE silica filled, designed for critical sealing applications involving aggressive fluids and demanding operating conditions. The oriented molecular structure and silica-based filler provide the material with excellent mechanical performance, superior hot creep resistance, and outstanding dimensional stability, even under high and prolonged loads.
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High chemical resistance: compatible with most corrosive fluids, strong acids, solvents, and oxidizing agents.
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Enhanced mechanical stability: biaxial orientation improves resistance to creep and permanent deformation.
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Excellent workability: easy to die-cut or CNC-machine, ensuring precision even for complex geometries.
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Low permeability coefficient: ideal for applications requiring long-term hermetic sealing.
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Service temperature range: from -200°C to +260°C depending on the type of fluid and applied load.
| Bidirectional PTFE | Sichem S11 |
|---|---|
| Composition |
Modified PTFE with Silica filler
|
| Density ASTMF 1315 |
2.2 g/cm³
|
| Minimum operating temperature |
-260 °C
|
| Maximum operating temperature |
260 °C
|
| Max operating pressure |
80 bar
|
| P x T Max.( Thk 0.8 - 2.0 mm) |
12000 Bar x °C
|
| P x T Max. ( Thk 3.0 mm) |
8500 Bar x °C
|
| Leakage DIN 3535-6 |
<0.05 mg*s-1*m-1
|
| Creep relaxation DIN 3535-6 |
<24 %
|
| Compressibility DIN 3535-6 |
>4 %
|
| Recovery DIN 3535-6 |
>1.7 %
|
| Minimum PH |
0
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| Maximum PH |
14
|
| Available sheets size |
1500x1500 mm
1750x1750 mm
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| Available thickness |
0.75 ÷ 6.00 mm
|
| Sheet size tolerance |
50 mm
|
| Thickness tolerance |
10 %
|
