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I have a Euro cylinder lock like below and it has got rather sticky - the key turn isn't as smooth as other locks.

enter image description here

Does anyone know how to lubricate it to make it less sticky? I've read about graphite powder for other lock types, but are they suitable for Euro cylinder locks as well?

Any help appreciated.

John M.
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1 Answers1

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Far from being an expert, here is my personal experience: silicon dry spray alone inside the cylinder, and WD40 on the sliding mechanism.

As for the cylinder, I had been advised to use graphite dust or silicon dry spray (non-greasy) by different key makers. I first used graphite dust, but it tended to agglomerate, so I finally used air duster cleaning to remove graphite dust and grease employed by former owners, during a hot day so that the old graphite & grease mix was liquid enough to pour out of the lock.

One important lesson I learned to never leave keys plugged inside the lock, because it prematurely ages the mechanisms.

Additional source: LocksOnline : help maintain locks

Laurent Duval
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