Appro rpo is a solvent based rust preventive oil blended with film forming additives, corrosion inhibitors and selected waxes to enhance the performance in salt spray & humidity cabinet. It can withstand horizontal water displacement properties and seal the corners and edges of the test specimen in salt spray & humidity cabinet. It is also blended with special type of wetting agent which will adhere to the parts to whch it will coat and also helps in degreasing easily.