LGRHDI Planigraph™


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.


Pure expanded graphite
Multilayers SS316L reinforcement


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

LGRHDI Planigraph™
 LGRHDI Planigraph™
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 140
Maximum operating pressure bar 200
  • Issued by the T.Dept. of Carrara S.p.a

  • Do not use the product at maximum temperature values and for uses at pressures higher than those typical of the Flue Gases. Consult the manufacturer for further information.

Size 1000 x 1000 - 1500 x 1500 40"x40" - 60"x60"
Thickness 1.0 ÷ 3.0 1/32 ÷ 1/8