Supranite NGR AS
Supranite NGR AS

Supranite NGR AS

Made of nuclear grade expanded graphite foils and ultra thin stainless steels, laminated in a multi-layer structure capable of withstanding high stresses. The graphite and stainless steel are bonded without glue by an exclusive physico-chemical process that gives outstanding cohesion. PMUC n°17-0214.
  • SUPRANITE ® NGR AS combines a good level of compressibility associated with a high elastic recovery.
  • SUPRANITE ® NGR AS provides a highly satisfactory seal as soon as the gasket starts to be tightened.
  • SUPRANITE ® NGR AS has outstanding mechanical properties and remains stable when overstressed at both cold and hot temperature.
  • SUPRANITE ® NGR AS is easy to handle and cut, and preserves its integrity under high stresses during tightening process.
  • PMUC qualified (Products and Materials Usable in Power Stations) by EDF n°17-0214.

Minimum Service Temperature (*)


Maximum Service Temperature (*)

800°C in inert atmosphere and 500°C in continuous steam service

Maximum Pressure (*)

250 Bar

(*) Temperatures and pressure not associated. Please consult with our engineering design department for high pressures and/or temperatures.

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