1. Features
GRAFIFLEX is characterised by a high level of chemical resistance and thermal stability as well as an excellent sealing effect and constant elasticity. Regardless of temperature cycle this material will not be subject to cold flow, shrinkage or aging. GRAFIFLEX fulfills the purity requirements for seals in nuclear power station valves (content of soluble chlorides < 20 ppm).
- GRAFIFLEX foil material
Approved for use in oxygen applications for pressures up to 250 bar and temperatures up to 200 °C by BAM (German Federal Institute for Material Testing, Berlin).
Approved for use in food processing industries by the Chemical and Technical Testing Office, Stuttgart, Germany.
Tested by DVGW (German Association of Gas and Water Industry) according to the KTW (plastics - drinking water) recommendations of the BGA (Federal Health Office) for use as sealing elements D1 and D2.
- GRAFIFLEX rings
Preformed GRAFIFLEX rings are supplied in densities between 1,4 and 1,85 cN/cm 3 .
- GRAFIFLEX tape
GRAFIFLEX tape is used to make rings for repair purposes. In order to stabilise the material and to ensure ease of handling the material has a surface pattern and a W-断面 (Merkel patent).
- high sealing effect
- low leakage rates
2. Application
Valves
3. Operating Conditions
|
Pressure: |
1000 bar |
|
Temperature: |
- 200 °C to +550 °C 1) |
|
|
- 200 °C to +700 °C 2) |
|
|
- 200 °C to +2500 °C 3) |
|
pH ＆#118alue: |
0-14 | |
