WD-40 Lubricant and Anti-Rust Spray

WD-40 is a penetrating oil and water-displacing spray. The spray is manufactured by the San Diego, California based WD-40 Company.

The long-term active ingredient is a non-volatile viscous oil which remains on the surface to which it is applied, giving lubrication and protection from moisture. This oil is diluted with a volatile hydrocarbon to make a low viscosity fluid which can be aerosolized to penetrate crevices. The volatile hydrocarbon then evaporates, leaving behind the oil. A propellant is used to create pressure in the can to force the liquid through the can's nozzle before evaporating.

Its unique properties make it useful in both domestic and commercial settings. Typical uses for WD-40 include removing dirt and extricating jammed screws and bolts. It can also be used to loosen stubborn zippers and displace moisture.

Technical Characteristics

• 50% aliphatic hydrocarbons.
• <25% petroleum base oil.
• 12-18% low vapor pressure aliphatic hydrocarbon. Reduces the liquid's viscosity so that it can be used in aerosols. The hydrocarbon evaporates during application.
• 2-3% carbon dioxide propellant.
• <10% inert ingredients.
• Available in 450ml and 200ml sizes.