LGRF Planigraph™

Composition

The expanded graphite jointing sheets LGRF Planigraph™ are available to make any type of flat gasket for industrial applications in high teperature. The graphite can works with all industrial streams and steam, except the strong oxidizers. The graphite LGRF gaskets have a dramatically low relaxation value (DIN 52913) and do not require retightening after thermal and pressure cycles.

Characteristics

Pure expanded graphite C > 98,00%
Tanged stainless steel core

Applications

Flat graphite gaskets for flanges RF and FF. The graphite is unsuitable with oxidizing fluids.

LGRF Planigraph™
 LGRF Planigraph™
Graphite density gr/cm3 1.0
Carbon Content % > 98.0
Ash Content % < 2.0
Material of the core tanged insert SS 316L
Thickness of insert mm 0.10
Compressibility % 35 - 45
Recovery % 15 - 20
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 100
Maximum operating pressure bar 100
Size 1.000 x 1.000
1.500 x 1.500
40” x 40”
60” x 60”
Thickness 1.0 ÷ 3.0 3/64” ÷ 1/8”