So even though it's very tempting if you have a can of WD-40 handy (and let's face it, most of us have!) to just give your lock a quick squirt, please don't! The same applies with bicycle chains, you can clean them with GT-85, but using WD-40 will attract dirt over time.
This is what we find works best to keep your lock in its best working condition lubricate the lock cylinder. Do not use WD-40, WD-40 is a solvent, not a lubricant and will, in fact, remove any type of lubricant that is in the cylinder. Use a lubricant that has a silicone, graphite or Teflon base only.
What Lubricants are Best for Locks. The best type of lubrication for a lock is a dry lube—such as Teflon (PTFE) or graphite. These types of lubricants repel dust and dirt and keep your lock from building up a gunky and sticky mess.
What's the best lubricant for your lock? When choosing the best product to lubricate locks, dry lubricants like graphite powder and PTFE lubricants are best. As mentioned above, oil-based products can attract dust and dirt which can damage the delicate internal mechanism of your lock.
Silicone Spray
A popular choice that many choose to stop doors making a squeaking sound is to spray the hinge with some silicone. Available at most good hardware stores, it's free from grease and oil and is safe to use on wood, metal, plastic, and rubber.
Common Causes of Sticky Door Locks
If a door lock is rusted or corroded, it can become hard to get the key into the lock, difficult to turn full, and also sticky and difficult to get out of the lock. If your lock is worn out, lubricant may be a temporary fix, but it's not going to resolve the problem.
Teflon-based dry lubricant is preferred by some locksmiths over other options, like graphite or WD-40. It's ideal because, besides lubricating your lock, it repels water and dust. That means that once you fix a lock with this type of lubricant, you can expect the lock to be in good shape for a long time.
The quickest way to do this is to spray WD-40 directly into the keyhole, around the latch, along the tube of a deadbolt and around the handle, and then turning the mechanism repeatedly, spreading the lubricant around inside. You only need to do this once a month or so to keep them all in near-new condition.
As with all mechanical objects with moving parts, doors and hinges need to be lubricated on a fairly regular basis. There are a number of products you can use to ensure everything is running smoothly. One of the simplest ways to lubricate your hinges and locks is to use Vaseline.
Silicone spray is excellent for fixing squeaky hinges and is widely available both online and in DIY stores. Silicone spray is free from mineral oils and grease, and safe to use on a variety of surfaces as a lubricant including plastic, rubber and metal.
WD-40 Specialist High Performance Silicone is your go-to silicone based lubricant spray that works well on all tools, rubber pipes, window seals, linkages, valves, locks, doors, plumbing fittings and belts.
One of the most common deadbolt issues is one that sticks or is difficult to turn. This is often due to a buildup of rust or grime in the components, preventing them from functioning easily. Repair your deadbolt with a dose of WD-40 (or a similar product). This will loosen dirt and rust and provide lubrication.
What Is WD40? It's a multi-use product meaning that can be used to remove rust from any metal surface, loosen rusty fasteners, lubricate moving components and remove duct tape from practically any surface, but you should not on use it on lock doors.
A: Although WD-40 is magic stuff, it is not the best choice to lubricate automotive door locks and linkages. Although it does a good job of cleaning and temporary lubricating, it goes away, so it makes a good first step. Graphite has long been a popular lube choice, but we like to use bike chain lube.
When tightening a fastener ALWAYS use a controlled method. Unless specifically told not to, always lubricate the fastener.
If your key doesn't turn in the lock, the problem may just be a poorly cut key. Test the lock with a key that was cut at a different time to be sure. If the key isn't the problem, try lubricating the lock using powdered graphite or a silicone-based lubricant.
If you are in a rush and need to remedy a sticky lock, the most convenient way is with olive oil from your pantry. In order to fix the lock using the olive oil, simply rub a small amount of the oil on your key and insert it in the lock.
Use 3-IN-ONE Lock Dry Lube to loosen, lubricate and protect home, auto and commercial locks. Easily reach into narrow lock mechanism with the attachable straw or use the wider spray pattern to refurbish and protect the entire lock.