On Tue, 22 Nov 2016 13:54:35 -0800, wrote:

How it works: The threaded fitting has a small O-ring inside and is
threaded onto the switch or pot until it seals.

What thread are you talking about here? The one the shaft revolves inside
of that's used for securing the pot/switch to the front panel?? Can't see
how that would work. :-/