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Graphite Rolls and Sheets

Pure Graphite Rolls and Sheets

Natural graphite flake turns to intercalated compound by chemical treatment. This chemical compound then rapidly decomposes by heating process, becoming expanded powder. Its bulk density is about 0.003g/cc. Then the powder is manufactured into sheets or rolls. No binder is used in the processing.

  • Glands;
  • Pressed packing rings;
  • Gaskets used in flanges, covers of observation holes, level meters;
  • Direct attach to the metal surfaces for gas phase sealing effectively;
  • Especially the expanded graphite rolls can be used on automatic production lines.
Pure Graphite Rolls
Pure Graphite Rolls
Pure Graphite Sheets

Rolls (sheets) size

Density
(g/cm3)
Length
(m)
Width
(mm)
Thickness
(mm)
0.8 or 1.0 or 1.1 30, 50, 80, or other size ≤1500 0.2~0.8 (recommend use 0.2, 0.25, 0.3, 0.4, 0.5, 0.6, 0.75, 0.8, mm)

Special size can be produced upon requirement.

Technical data for pure graphite rolls

Item Unit Value
Tolerance of density g/cm3 -0.06~+0.06
Tolerance of thickness mm -0.04~+0.04
Carbon content % 99
Tensile strength MPa 4.5
Compressibility % >40
Recovery % >10
Sulphur content ppm <1000
Chlorine content ppm <45
Applied temperature range
(in oxidizing atmosphere)
oC -200~+600

Reinforced Graphite Sheets

Reinforced Graphite Sheets

The reinforced graphite sheets are in three layers, the middle is a stainless steel sheet (or mesh) and both sides are flexible graphite sheets. The products are done through specially pressing or sticking process.

It is a kind of sealing packing with excellent comprehensive properties, and prevent from being squeezed out or sticking onto flanges, be suitable for making gaskets of cylinders for air compressors, internal combustion engines and packing for different piping and flanges.

With the following properties:

  • Good compressibility and resilience;
  • Small stress relaxation;
  • Fine compensating function for unevenness of surfaces;
  • Long service life.

Spec. of reinforced graphite sheets

Reinforcing materials Size (mm) Thickness (mm)
Reinforced with 0.1mm thick stainless steel
316 or 304 sheet by mechanically pressing
1000x1000 1.0 / 1.5 / 2.0 / 3.0
Reinforced with 0.05mm thick stainless steel
316 or 304 sheet by sticking
1000x1000 1.0 / 1.5 / 2.0 / 3.0
Reinforced with 0.2mm thick stainless steel
316 or 304 wire mesh by sticking
1000x1000 1.0 / 1.5 / 2.0 / 3.0
Reinforced with 0.2mm thick galvanized iron
sheet by mechanically pressing
1000x1000 1.0 / 1.5 / 2.0 / 3.0

Working pressure: 3Mpa / 10Mpa / 25Mpa

Graphite sheets service temperature: -200oC~850oC

PH range: 0~14.