Graphite Gaskets

Graphite has become one of the main, asbestos-free materials to be employed in the manufacture of gaskets. Because of these material´s characteristics, graphite gaskets are universally used under high pressure and temperature conditions due to high resistance to steam. They cover most requirements, providing and unbeatable seal for long periods of time and at various operating temperatures. They are fireproof and possess high breaking strength and resistance to high temperature fracture, together with maximum chemical resistance to most chemical agents and solvents, with the exception of strong oxidants (concentrated nitric and sulphuric acids etc.)

Technical data
  • Graphite content: 98%-99%-99,8%(nuclear grade)
  • Extractable chloride : <50 ppm
  • Sulphur content: <800 ppm
  • Density: 1.0 +0,1 g/cm3
  • Compressibility: 40% (ASTMF-F36)
  • Recovery: 5% (ASTMF-F38B)
  • Sealing capacity: 0,5 ml/min. (ASTM F37B)
  • Operating temperature
    • Neutral Atmosphere: 200ºc a + 3.000ºc
    • Oxidante Atmosphere: 200º a 450ºc
    • Sublimation point: +3.300ºc
  • Expanded laminated graphite. Universal use

The especial fragility of graphite during handing has lead to its use with various type of insertion la particular:

  • Graphite reinforced with flat metal plate: this may be AISI 316 or AISI 316L, 0.05mm, thickness. Recommended for use with steam.
  • Graphite reinforced with perforated metal plate: this may be AISI 316 or AISI 316L, 0, 1 mm. thickness. Recommended for use with high pressure and temperature.

All of these forms of graphite products may be available in either industrial or nuclear qualities.

Heat exchangersPipingOther applications