Teflon is a brand name (by Chemours), generically it’s known as PTFE, or polytetraflouroethylene. We at ACME Locksmith have our favorite, and we’ve reached out to a couple locksmith distributors and fellow locksmiths to see if there is an industry consensus, and there is.īy far, locksmiths use a product that contains Teflon (yes, the same non-stick coating on cookware, in a different form). Locksmith recommended: The Best Lubricant for Locks are Teflon Based Lubricants As a stand-alone lubricant, WD-40 is not the best choice for lock lubrication. The oily residues attracts and holds onto dust, dirt, or other airborne contaminants, and these will cause the lock to operate poorly after a short time.įor servicing (cleaning) an old lock, WD-40 is useful as it can help remove corrosion so it can operate more smoothly, but all oil residues should be cleaned off after, using a de-greasing product, and then lubricated after with a non-oil based product. It will, indeed lubricate a lock, and also inhibit corrosion (or help remove it), but the main drawback of WD-40 for lock lubrication is that it is a petroleum based product that leaves an oily residue. WD-40 has been commercially available for consumer use since the late 1950’s, and it has found many uses around the home. It isn’t so much that graphite won’t work as a dry lubricant – it’s that graphite is misused as a dry lubricant, and there are better solutions available for non-professionals. If someone shoots a liquid lubricant into the lock, that has existing graphite in it, the graphite will work against it and gunk up the lock parts.įor these reasons, most locksmiths won’t recommend graphite for locks, although it’s still used by some tradesmen. Since most people won’t know to take apart and clean their locks, it’s a big issue.Īlso, graphite will adhere to and absorb nearly any liquid. Graphite is a good choice for a lock body that is new or has been cleaned, but too many people put in too much graphite! Anytime they have problems, they just dump in more graphite! Eventually, the graphite itself (combined with any dust that may have accumulated in that time) starts to cause the problem and leads to the lock no longer turning easily.
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