FLEXIGRAF® MULTIFLEX is a multilayer sheet for flat gaskets made of pure expanded mineral graphite, reinforced with a smooth AISI 316L stainless steel foil insert.
The composition based on pure graphite, reinforced by multilayer steel inserts, makes these flat gasket sheets suitable for severe operating conditions. They are ideal for use with high-temperature and high-pressure saturated steam, chemical agents, and aggressive fluids, provided they are used in non-oxidizing environments.
High thermal resistance: graphite is known for its electrical conductivity and low thermal conductivity, making it suitable for applications involving high-temperature saturated steam.
Superior stability and flexibility: the multiple stainless steel 316L reinforcement foils provide a solid structure, giving additional mechanical strength and stability to the gasket and improving performance in demanding applications.
Excellent workability: easy to die-cut and CNC-cut, ensuring precision even for complex geometries.
High resistance to high temperatures and pressures: reinforced graphite flat gaskets are suitable for applications requiring high resistance to temperature and pressure, along with good chemical resistance. They are ideal for use in plants operating with saturated and superheated steam, or in applications requiring materials capable of withstanding very high temperatures without losing their mechanical properties.
Operating temperature: up to +550 °C, depending on the type of fluid, pressure, and applied load.
| Expanded graphite | Flexigraf Multiflex |
|---|---|
| Composition |
Graphite laminate reinforced with a flat stainless steel multilayers core
|
| Minimum density DIN 28090-2 |
1.3 g/cm³
|
| Maximum density DIN 28090-2 |
1.6 g/cm³
|
| Min recommended Peak Temperature |
-200 °C
|
| Max recommended Peak Temperature |
+550 °C
|
| Max operating pressure |
200 bar
|
| Leakage DIN 3535-6 |
≤0.1 mg*s-1*m-1
|
| Creep relaxation DIN 3535-6 |
≤5 %
|
| Compressibility DIN 3535-6 |
30-45 %
|
| Recovery DIN 3535-6 |
3-7 %
|
| Available sheets size |
1500x1500 mm
1000x1000 mm
1500x1000 mm
|
| Available thickness |
from 1 to 6 mm
|
| Sheet size tolerance |
50 mm
|
| Thickness tolerance |
10 %
|