What is a good thread locking compound for a threaded barrel?

[cash_tx]

I recently bought a semi auto 22LR pistol that has a barrel threaded for a suppressor. I don't plan on attaching a suppressor to this gun anytime soon, so just leaving the cap in place for now. However, when I was test firing the gun earlier today; I noticed the thread cap was working loose after about two magazines or so. I was thinking about putting a small amount of Loctite 242 Blue on the threads, but is there a more appropriate thread locker for this application?

 

[mdwest]

Clear fingernail polish typically does a decent job for temp locking threads…

Just raid that women’s make up stash I know you keep, and you’ll be good..

[emoji23]

 

[cash_tx]

Clear fingernail polish typically does a decent job for temp locking threads…

Just raid that women’s make up stash I know you keep, and you’ll be good..

[emoji23]

LOL, guilty as charged! I actually have a bottle of clear nail polish in my gun tools drawer.

 

[Wyatt Smith]

If it’s only to keep it vibrating loose a little high temp silicone gasket maker will do that beautifully. It won’t be hard to remove either. I use it on chainsaw screws that tend to back out.

 

[Mark Biggerstaff]

What @mdwest said works well. Use it or drop of blue loctite.

 

[benchracer]

Loctite 222 (purple loctite) is the right stuff. It will hold things in place and is very easy to remove.

 

[Swamptrudger]

I use an o-ring

 

[Lone Star Bluegrass]

Plumber’s tape if you don’t want *too* permanent of a solution. Still enough for…errr…some of the FASTER shooting.