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Graphite is a crystalline form of the element carbon. It consists of stacked layers of graphene. Graphite occurs naturally and is the most stable form of carbon under standard conditions.

The thermal conductivity of graphite sheet is two to five times that of copper, which has the highest thermal conductivity among metals, and although slightly lower than that of diamond, it is higher than that of other metals. It is expected to be a heat countermeasure material that has excellent heat conductivity (heat dissipation and heat diffusion) and is both thin and flexible. It is highly effective for heat diffusion and dissipation in various industrial applications and electronic devices.

Uni Klinger’s Graphite Foil is an excellent sealing material for high temperature, high pressure transfer of liquids, gases, steam, chemicals, and corrosives. The material is manufactured from high purity, high crystalline natural graphite flakes, which are processed into continuous foil by special acid and thermal treatments to produce expanded graphite crystals. The expanded graphite crystals are then formed into foil through a calendaring process without any resins and binders.

Graphite Foil is an excellent material with thermal & chemical resistance so used in the automotive, petroleum, chemical, paper, and nuclear industries. Graphite Foil is fragile to handle but still is used to make bipolar graphite plates in the fuel cell industry, sealing high temperature valves, shafts, and flanges.

Uni Klinger’s Graphite sheets with reinforcement are used in many applications and is one of the most ideal gaskets sealing material. The sheets are manufactured with high purity flexible graphite foil reinforced with metallic or non-metallic inserts in the middle of two graphite foil sheets. Insert material provide additional strength for high pressure applications and better handling.

Graphite acts as a thermal barrier at high temperatures to provide outstanding reflectivity and hence Graphite with reinforcement is used in automobiles, valve applications, Boiler and Exhaust application also.

Graphite is used as linings and protective layer for vessels containing hot or corrosive fluids.

Characteristics and Benefits:

• Asbestos-free and contains no fibers, binders, or additives.
• Impermeable to gases and liquids
• Suitable for service over a wide range of pressures and temperatures
• Resists thermal shock.
• Maintains excellent seal ability.
• Does not age, shrink or harden.
• Seals easily under low to moderate bolt loads
• Highly chemical resistant

Flexible graphite is becoming a favourable material for extreme service applications because of its versatility and sealing capabilities. From pulp and paper, and mining to chemical, petrochemical, and automotive applications, the high thermal conductivity, chemical resistance, and self-lubrication of flexible graphite lends itself well in these industries. The chemically inertness (apart from strong oxidizers) allows for the operation in a pH environment of 0-14. In addition, graphite offers high thermal conductivity and low electrical resistance.