We may receive a commission on purchases made from links. WD-40 was developed in the late 1950s by the Rocket Chemical Company as a rust preventative for the aerospace industry. The letters W and D ...

The Classic WD-40 ® Product is a versatile solution that protects metal from rust and corrosion, displaces moisture, and lubricates almost anything. But when you need to cut through deep rust and ...

WD-40 is designed to prevent rusting by displacing the water in cracks and crevices in metal (that's what the "WD" stands for). It is also a versatile lubricant, and can even be used as a solvent—but ...