POWERgraf HP Premium

POWERgraf HP Premium

Multi-layer sealing material of expanded graphite with very low oxidation value. The gasket sheet is reinforced with a plurality of perforated and tanged stainless steel interlayer without the use of adhesives.

Availability on request.

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Multi-layer sealing material of expanded graphite with very low oxidation value. The gasket sheet is reinforced with a plurality of perforated and tanged stainless steel interlayer without the use of adhesives.
  • The seal is intended for use in the chemical, petrochemical and power supply industries.
  • For higher pressures and temperatures.
  • Expanded graphite meets the strictest oxidation requirements.
Dimensions:
  • Sheets 1000 x 1000 mm.
Thickness:
  • 1; 1.5; 2; 3 mm.
QUANTITY VALUE
Minimum Operating Temperature: -240 °C
Maximum continuous operating temperature in an oxidizing atmosphere: +450 °C
Maximum continuous operating temperature for steam: +650 °C
Maximum continuous operating temperature in an inert atmosphere: +850 °C
Maximum working pressure: 130 bar
Compressibility (ASTM F 36 A): 30 - 40 %
Recovery: 4 - 5 %
Graphite purity: ≥ 99 %
Sulphur content: ≤ 750 ppm
Content of leachable chlorides: ≤ 40 ppm
Content of leachable fluorites: ≤ 10 ppm
TGA analysis DIN 28090-2, 4h, 670 °C: ≤ 4 % / hod
Specific gravity: 1,0 - 1,12 g/cm3
In order to improve the quality of our input control of materials for gasket production, we have purchased a tensile testing machine.

Now we are able to:
  • Check the mechanical properties of purchased materials.
  • Verify the values stated on the supplier's materials sheets.
  • Check the dimensions, hardness and quality of the material surface.
  • Guarantee the customer's required parameters.

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