How did you waterproof your external antenna?

I had leakage once which ruined an inline filter. Since then, I use dielectric grease on all threaded fittings. I also use “waterproof” RG6 fittings. Here’s a couple pics of my “waterproof” setup using PVC and CPVC. I only slip fit, but could glue it to really really make it waterproof.

Cheers!
LitterBug