WD-40
In 1958 the Rocket Chemical Company of San Diego, California succeeded in its 40th attempt to come up with a water displacement product that would prevent rust and corrosion on aircraft.

A rusty rocket is not a good thing.
In 1958 the Rocket Chemical Company of San Diego, California succeeded in its 40th attempt to come up with a product that would prevent rust and corrosion on aircraft. So, the name “WD-40” stands for water displacement, formula 40.
Its first application came as …