The two sides of TOP SEALING Graphite Sheet are pure expanded graphite plates with a metal core thickness of 0.1 mm and a stainless steel material of SS316L/SS304/carbon steel/Nickel 600#. The graphite layer and the metal core are bonded by mechanical and glue. Because graphite slabs have the characteristics of heat resistance, pressure resistance and corrosion resistance under extreme conditions, they are widely used in the automotive, refining and petrochemical industries.