WD-40

WD-40 Company is a San Diego-based manufacturer founded in 1953 around the original WD-40 multi-use product — a water-displacing penetrant aerosol that has since become a hardware-store staple worldwide. The brand expanded the product line in the 2010s with the WD-40 Specialist range: focused professional-grade formulations for specific tasks (degreasers, contact cleaners, silicone lubricants, dry lubes, rust soaks, penetrants), positioned alongside the original blue-and-yellow can but with separate chemistry tuned for each application.

The Specialist line is where WD-40's autocare relevance lives. Several Specialist products carry independent certifications uncommon in the category: EPA Safer Choice on the water-based Cleaner & Degreaser, NSF food-equipment registrations on multiple SKUs, and explicit non-flammable / 50-state-VOC-compliant chemistry for users in CARB-regulated markets. The brand's SDS index is comprehensive and well-maintained at files.wd40.com.