Sealing edges of trailer. What putty or caulking do you use?

It’s a 2016 but there’s spots along the front trim where you can see gaps in the butyl tape like it fell out or something. You can see the wall all the way back behind the trim. The gaps are maybe 1/4 inch to a 1/2 inch long just every so often. I don’t want to take any chances of water getting in there.