The Fascinating History and Uses of WD-40

WD-40, invented in 1953 by Norm Larsen, was initially meant for the aerospace industry. The name stands for 'Water Displacement, 40th formula,' signifying the number of attempts to perfect the solution.

Despite popular belief, WD-40 is primarily a solvent and rust dissolver, not just a lubricant. Its multi-use formula is designed to penetrate stuck parts, displace moisture, and protect metal from rust.

The exact formula of WD-40 is a trade secret, closely guarded and never patented. Patents expire, but trade secrets can remain proprietary indefinitely, as long as they're kept confidential.

WD-40 was first used by Convair to protect the outer skin of the Atlas Missile from rust and corrosion. This link to space exploration isn't widely known but marks its importance in history.

WD-40 has over 2,000 listed uses, from silencing squeaky hinges to removing sticky residues and even helping to get rid of stains on clothing. Its versatility is one of its most remarkable features.

The consumer version of WD-40 was put on shelves in 1958. Legend has it that employees snuck cans out of the factory to use at home, prompting the company to offer it to the public.

WD-40 complies with environmental regulations, but it's still petroleum-based and should be used with care. Prolonged exposure to its vapor can cause health issues, necessitating proper ventilation.

WD-40 was also used by NASA to protect the Saturn V rocket, which took humans to the moon, from corrosion.