Expanded graphite sheet made from high carbon flake graphite and processed with chemical treatment, hot-dilatation rolling. The applicable temperature is from -200 to 1650 C in nonoxidation medium and from -200 to 850 C in oxidation medium. The product is used into various cylinder gaskets and sealing gaskets, graphite foil, packing, etc. High Purity Expanded Graphite Sheet TF-GR