Steel Seal Head Gasket Repair creates a seal (as the name suggests) that will set like steel, this will repair the leaks in the cylinder head gasket permanently. Steel Seal can be used in all types of vehicles and engines with a water cooling system regardless of whether your vehicle is petrol or diesel. Steel Seal Head Gasket Repair has a solid track record of repairing cars, bikes, vans, pickups, 4x4's, tractors, lorries and was once even used in an aeroplane!