On Saturday, February 25, 2017 at 10:13:39 AM UTC-5, trader_4 wrote:


Here is a diagram of what you're talking about, for everyone's
benefit:


http://removeandreplace.com/wp-conte...fication-1.jpg

It looks like this one is made to seat with the rubber at
least partly on the smooth part, not on the so that it seals.

Not sure why yours is like it is. Putting silicone on the threads
when assembling it might work though if you can't figure out
the correct solution.