Manufactured from flexible graphite foil mechanically clinched to (0.20mm~0.25mm) thick carbon steel tanged (perforated) metal sheetC 08F tinplate insert. It is best gasket material for cylinder head gasket. This item is suitable for making: Engine Seals. Exhaust seals, Graphite gaskets, Seals Gaskets. Cylinder Head Gasket The dimensions of the standard sheets: Whatsapp:86 13566083951 Size: 1000X1000mm,1500X1500mm,1000X500mm Thickness: 1.0mm ~ 4.0mm