Why is wd-40 called wd-40

Overview

WD-40 is a multi-purpose lubricant and rust-prevention product that has become a household staple worldwide. Its origins trace back to 1953 in San Diego, California, where the Rocket Chemical Company, founded by chemist Norm Larsen, was tasked with creating a rust-prevention solvent for the aerospace industry. The company's three employees worked to develop a formula that would displace water and prevent corrosion on Atlas missile parts. After 40 unsuccessful attempts, they finally perfected the formula on their 40th try, leading to the name WD-40. The product was initially used exclusively by Convair, an aerospace contractor, to protect the outer skin of the Atlas missile from rust and corrosion. In 1958, the company began selling WD-40 commercially in aerosol cans, and by 1960, it had expanded to industrial markets. The product's versatility quickly became apparent as users discovered it could lubricate, penetrate stuck parts, and protect metal surfaces. The Rocket Chemical Company changed its name to the WD-40 Company in 1970, reflecting the product's overwhelming success. Today, WD-40 is sold in over 176 countries and has become synonymous with household maintenance and repair.

How It Works

WD-40 works through a combination of chemical properties that make it effective for multiple applications. The formula consists of a mixture of hydrocarbons and other compounds that create a thin, protective film on surfaces. Its primary mechanism is water displacement: the product penetrates microscopic pores and crevices, pushing out moisture that causes rust and corrosion. This is achieved through low surface tension, allowing it to spread easily and displace water molecules. The lubricating properties come from the hydrocarbon base, which reduces friction between moving parts by forming a slippery layer. WD-40 also contains corrosion inhibitors that chemically bond to metal surfaces, forming a barrier against oxygen and moisture that leads to oxidation. The aerosol delivery system ensures even application and penetration into tight spaces. While the exact formula is a trade secret, it's known to include mineral oil, various hydrocarbons, and a propellant. The product evaporates quickly, leaving behind the protective film without attracting dirt or dust. This combination of displacement, lubrication, and protection makes WD-40 effective for tasks ranging from loosening rusty bolts to preventing squeaky hinges.

Why It Matters

WD-40 matters because it represents one of the most successful and versatile consumer products in history, with applications far beyond its original aerospace purpose. Its impact extends to everyday maintenance, industrial use, and even emergency situations. In households, it saves time and money by fixing squeaky doors, loosening stuck zippers, and protecting tools from rust. Industrially, it prevents equipment failure and extends machinery life in manufacturing, automotive, and marine sectors. The product's reliability has made it a trusted solution for over 70 years, with millions of users relying on it for quick repairs. WD-40's cultural significance is evident in its presence in garages, workshops, and homes worldwide, often serving as a first resort for mechanical issues. The company's continued innovation, including specialized formulas like WD-40 Specialist and WD-40 Bike, demonstrates its ongoing relevance. Beyond practical uses, WD-40 symbolizes American ingenuity and the power of simple solutions to complex problems, maintaining its status as an iconic product in global markets.