Presto Aluminium Spray contains 99.5% pure aluminium according to DIN 1712. [BR] For anti-corrosion treatment of exhaust pipes, protective coatings on exhaust systems, heat pipes in tiled stoves, heat-stressed stove pipes in workshops, etc. Suitable for various substrates such as iron, cast iron, stainless steel, suitability for use on aluminium and non-ferrous metals must be tested in advance on an inconspicuous area.