Originally Posted by ScotY
......What about for a trim piece that snaps into a hole. Hard to describe but I'm sure you guys have all seen something like it...a tab shaped like a sharp "V" (think of a spring steel bent into a "V" shape) that goes into a round hole. Is there any simple way to seal this aside from a lot of goop around it? I'm thinking not and I'm overanalyzing this.
I installed side trim on my Bronco with these exact 'V' clips, about 10 years ago. At the time, I wondered the same thing; what to seal the holes with that would last and not rust.
I wound up using 3M body caulking that was laying around the garage. It had a waxy consistency that shedded water . I just rolled up a good hunk and applied it at the hole before pushing the trim clips into it. It's worked great over the years with no rusting at all, and the vehicle's sat outside exposed to the elements for most of this time.....