Is wd40 a lubricant or a rust remover?

WD40 is called universal rust removal lubricant.

WD-40 is generally used for quick rust removal and lubrication. Because of its strong penetration and high speed, it can quickly decompose rusty and solidified parts, but its disadvantage is that it is also volatile, that is, it will soon fail and rust and continue to solidify. It is ok for the bearings used for bicycles to rust quickly, but WD-40 should be dried as much as possible after rust removal, and then lithium-based grease should be added for lubrication and oxidation prevention.

brand introduction

WD-40？ That is, "displacement, 40th type", W of WD-40 stands for water, D stands for displacement, and 40 stands for 40th attempt. The name of WD-40 is directly taken from the formula code used in the research notes of the chemists who developed WD-40 in 1953. WD-40 multi-purpose products are widely used in military industry, aerospace, airplanes, automobiles, ships, powder metallurgy, mines, electric power, electronics, pharmaceuticals, food, family and other fields.