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First, clean the keyhole with a penetrating lubricant like WD-40. (Don't apply household oil to the key or cylinder because it attracts dirt and eventually would gum up the lock.) Spray the lubricant into the keyhole itself and then spray it on the key.
Then, is it OK to use wd40 on door locks?
WD-40 is a lubricant used for many household items as well as car parts. It is designed for light-duty lubrication or to unstick areas. It can help remove rust on car hinges and latches. Graphite lubricant is the choice for locks because it doesn't attract dust and dirt, which can damage the locking mechanism.
- Squirt a little powdered graphite (available in squeeze tubes at home improvement and automotive stores) in the keyhole of the lock.
- Insert the key in the lock and turn it several times to distribute the graphite.
Keeping this in view, what is the best way to lubricate a door lock?
Steps
- Blow dust out of the keyhole. Use a can of pressurized air or an air compressor to blow the dust out of the lock.
- Spray the lock cylinder and opening. Use a spray cleaner, such as WD-40, to clean the lock cylinder and opening.
- Lube the lock with a dry lubricant.
- Use WD-40 as a short term solution.
5 Answers. 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.