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Expanded flexible graphite

After processing into its exfoliated form, the material is essentially pure graphite, typically over 95% elemental carbon. Consequently, the material has a wide chemical resistance, although must not be used in oxidizing environments. Commonly supplied at a bulk density of 1100 kg/m3, which is approximately 50% of theoretical maximum and ideal for the majority of industrial applications.

Material can be supplied at a higher density (for applications operating at high fluid pressure), or at lower density (where sealing loads are relatively low or where good conformability is required).