Thread on cans

[MarkG]

I like using a simple wedge lock washer. If the shoulders are true on the barrel and suppressor, you will not have any alignment problems.
http://www.mcmaster.com/#lock-washers/=brt4ic

Very bad idea. NEVER use a washer.

Teflon tape is a good temporary fix, but it will eventually work loose as well. It will just stay tight longer and it helps protect the threads.

This guy has it right. A few layers of Teflon tape will do the job nicely.

I use a couple drops of blue loctite. After a shooting sessin most of it burns off so the can is easilly removed but just enough remains to prevent the can from loostening while shooting.

MadDog

Most of it burns off? Loctite is for fasteners, not suppressors.