Mitsubishi Lancer Evolution Evo 4 5 6 7 8 9 Replacement Manifold Gasket Multi Layer.
 
To improve reliability and help seal against warped flanges these gaskets have a layer of high temperature carbon sandwiched between two pieces of perforated sheet gasket steel. Upon compression, this allows an even complete seal over the whole flange face. There is also steel fire ring around the internal bore to ensure even the highest temperatures are kept at bay from damaging the gasket.