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Water Displacement, 40th formula.
Water displacement is the means by which WD-40 prevents corrosion. 40 is for the 40th attempt by inventor Norm Larsen to effectively formulate a mixture that would achieve that end.
"Water Displacement perfected on the 40th try". Convair, an aerospace contractor, first used WD-40 to protect the outer skin of the Atlas Missile from rust and corrosion. It was originally only an industrial product, and the company was called Rocket Chemical Company. The product made its first appearance on store shelves in San Diego in 1958, 5 years after original development. The company changed it's name from Rocket Chemical to WD-40 in 1969.
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∙ 15y ago
Wiki User
∙ 12y agoWD 40 is a popular brand for lubricating oil. It is very usefull for rusted bolts, remove humidity...
Wiki User
∙ 15y agoyou liar , santa is not real. i bet you are really fat. wd stands for wank the dog
Wiki User
∙ 14y agowater-displacing spray. the 40 means how strong
Wiki User
∙ 9y agoWD40 is a spray lubricant originally designed to be a water repellant so that mechanical parts don't corrode. It has a number of household uses as well.
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