POWERgasket 400

Graphite and carbon fibre fibre fibreboard seals with NBR bonding. For the highest pressures and temperatures. Dimensions according to standards and to order.

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Product description

We offer fibre rubber seals according to ČSN, EN, DIN, ANSI standards as well as non-standard ones to order.

POWERgasket 400 gaskets are made of fibre rubber plate made of graphite and carbon fibre with NBR bonding.

  • For the highest pressures and temperatures.
  • For petroleum derivatives and hydrocarbons, water, saturated steam, solvents, gases and chemicals in general.

Available seal thicknesses: 0.5 - 1.0 - 1.5 - 2.0 - 3.0 mm

Technical specification

POWER®gasket 400ASTMValue
Temperature range in oxidizing atmosphereup to +270 ºC
Operating pressureup to 130 bar
CompressibilityF 369 %
Reverse suspensionF 3660 %
Weight increase:
5h / ASTM IRM 903 at 150 ºC
5h / ASTM Fuel B at +21 ÷ +29 ºC
F 14610 %
9 %
Increase in thickness:
5h / ASTM IRM 903 at 150 ºC
5h / ASTM Fuel B at +21 ÷ +29 ºC
F 1467 %
7 %
Tensile strength-15 N/mm²
Specific gravity-approx. 1,7 g/cm³

Features

Feature Value Unit
Operating temperature
-30 to 200 °C
Operating pressure
0 to 40 bar
Non-standard temperature Vláknitopryžová těsnění bez ohledu na výrobce mají z důvodu obsahu pryže omezenou stálou teplotní odolnost, při vyšších teplotách použití konzultujte.
201 to 270 °C
Non-standard pressure Vysekávaná těsnění jsou standardně dimenzovaná pro použití do 40 barů (v závislosti na typu spoje). Pro vyšší tlaky doporučujeme kovová těsnění nebo aplikaci konzultujte.
41 to 130 bar
Compressibility Metoda ASTM F 36
5÷15 %
Reverse suspension Metoda ASTM F 36
50 %
Weight gain: 5h / ASTM IRM 903 at 150 ºC Metoda ASTM F 146
15 %
Weight gain: 5h / ASTM Fuel B at +21 ÷ +29 ºC Metoda ASTM F 146
15 %
Thickness increase: 5h / ASTM IRM 903 at 150 ºC Metoda ASTM F 146
15 %
Thickness increase: 5h / ASTM Fuel B at +21 ÷ +29 ºC Metoda ASTM F 146
15 %
Tensile strength
15 N/mm²
Specific gravity
1.65 g/cm³

Questions and Answers

For fibre rubber materials, it is generally true that the weakest part is the rubber, i.e. NBR, CSM, etc. In particular, the temperature resistance of elastomers ranges from -20 °C to maximum 150 °C. For this reason, the temperature resistance cannot be increased even by the addition of e.g. graphite, aramid, etc. Nevertheless, it is often argued that these materials can be used "short term" even at 350 °C. But can the term "short term" be specified?

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