Graphite is a common and stable form of the element carbon, and it has excellent properties as a dry lock lubricant. It can last a long time, and it does not attract dirt. ... 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!Mar 1, 2021
Should I use graphite or wd40 in my locks?
Graphite powder is the preferred lubricant for locks. You should be able to get it at any hardware store in a squeeze bottle that is half air, allowing you to blow it right into the keyway. You are going to have to wait a while before putting it on, as the residual WD-40 will gum it up.