Planigraph™ LGRHDI

Composition

The graphite gasketing sheets LGRHDI are the greatest material to make gaskets for high temperature and high pressure services for RF, FF, LMF and LTG piping and heat exchangers flanges. LGRHDI shows a great value of relaxation with an excellent mechanical strength.

Characteristics

  • Pure expanded graphite
  • Multilayers SS316L smooth reinforcement 0.05 mm thickness

Applications

Graphite gaskets for flanges RF, FF, LMF and LTG. The graphite is unsuitable for sealing oxidizing fluids.

Planigraph™ LGRHDI
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 Planigraph™ LGRHDI
Graphite density gr/cm3 1.0
Carbon Content % > 98.0
Ash Content % < 2.0
Material of insert AISI 316L
Thickness of insert mm 0.05
Compressibility % 25 - 35
Recovery % > 15
Gas Permeability DIN 3535 cm3/min < 0.6
Relaxation stress DIN 52913 N/mm2 > 45
Temperature max with steam °C 550
Temperature max with weak oxidants °C 450
Temperature min cryo °C -196
Maximum assembly load RT N/mm2 300
Maximum operating pressure bar 250
Size 1000 x 1000 - 1500 x 1500 40"x40" - 60"x60"
Thickness 1.0 ÷ 4.0 1/32 ÷ 5/32