Graphite foil is an excellent sealing material for high temperature, high-pressure transfer of liquids, gases, steam, chemicals and corrosives. It is manufactured from high purity, high crystalline natural graphite flakes, which are processed into continuous foil by special acid and thermal treatments to produce expanded graphite crystals. The expanded graphite crystals are then formed into foil through a calendaring process without any resins and binders. Fuel cell and flow battery companies are also finding use for this material as a seperation layer.


  • Excellent thermal stability conductivity & reflectivity.
  • Resistant to high temperature of 450°C (805°F) in air, 700°F (1292°F) in steam & 3000C (5432°F) in vacuum (or reducing.)
  • Chemically inert with pH range of 0-14 (except strong oxidizers such as nitric or sulphuric acid).
  • Different purities available 
  • Low coefficient of friction & self-lubricating
  • Asbestos free & no associated health hazards
  • Low electrical resistivity
  • High thermal conductivity
  • Highly anisotropic - electrical & thermal properties different parallel to & perpendicular to flakes. 
  • Excellent in-process longevity - save replacement and down time costs.
  • Non-Porous.
  • Easy to cut and shape
  • Machine to print available for gaskets & seals


  • Graphite foils are distinguised by the level of sulpher & chlorine
  • Lower amounts of S & Cl in Standard, High Purity & Nuclear
  • Nuclear grade not available in small quantities