Stop in for a cup of coffee

So, what do you guys think of using this on new Trans hump,
Dynatron Gray Auto Seam Sealer Caulk
Then pop rivet it in, from the bottom, so heads are on underside?
https://www.autozone.com/sandpaper-...n-gray-auto-seam-sealer-caulk-12oz/167027_0_0
Or just weld it? With this sealer? Worried heat will degrade its performance...
Going to weld it with sealer.....Easier to weld....