Both of graphite foil and graphite sheets are flexible graphite products. graphite foil is usually in rolls and graphite sheets has the strengthed style.
Graphite foil and graphite sheets are made from compressed exfoliated mineral graphite, pure graphite carbon and without fillers and binders. Most of graphite foil and graphite sheets in the market have a carbon content ranging from 95% -98%. Some brand of flexible graphite foil has a high purity of ≥99% carbon content. The higher carbon content,the better chemical resistance, better thermal conductivity and better sealability.
Characteristics of graphite foil and graphite sheets: electrical conductive,thermal conductive;
heat and fire resistant; compressible, conformable, low creep relaxation;Chemical resistant, compatible with most chemicals;reinforced structure to handle high pressure applications.
Graphite foil and graphite sheets are used commonly in high temperature sealing applications.
Applications of graphite foil:
- Gaskets material in automotive, petroleum and chemical, paper, and nuclear industries.
- Excellent linings and protective layer for vessels containing hot or corrosive fluids.
- Excellent for sealing high temperature valves, shafts and flanges.
- Fuel cell industry for bipolar plates.
Flexible graphite foil is made with pure expanded mineral graphite. As gasket material, it is usually fabricated into Graphite Laminate, reinforced graphite sheet and widely used in fluid sealing applications: flange gasket, spiral wound gasket, heat exchanger gasket, etc. It can also be used as solid lubricant in metal stamping and forming applications, or as heat liner in industry furnaces and other heating devices
Graphite sheets typical applications :heat and chemical resistant gasket, seal, liner; thermal conductive seal; heat exchanger gasket.