MinGraph® Flexible graphite sheet, or flexible graphite foil, is manufactured from high purity compressed exfoliated/expanded mineral graphite (flake graphite). Standard industrial grade MinGraph® has a minimum 99% carbon content, which is the highest in the industry, comparing to other brands such as Grafoil®. MinGraph® flexible graphite is also available in extra pure premium/nuclear grade, as well as special treated grade with enhanced oxidation and corrosion resistance. MinGraph® graphite gasket sheets and laminates are also supplied with chemical resistant metallic and non-metallic reinforcement.