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What does the name "WD-40" stand for?
"WD-40 literally stands for Water Displacement, 40th attempt. That's the
name straight out of the lab book used by the chemist who developed WD-40
back in 1953. The chemist, Norm Larsen, was attempting to concoct a formula
to prevent corrosion-a task which is done by displacing water. Norm's
persistence paid off when he perfected the formula on his 40th try. Please
see our history section for more information."