I’ve got a few pieces that are rusty and I plan to sandblast them but don’t really want to mix up epoxy to cover them if it’s not necessary. I’m talking about random little brackets and stuff that are mostly unseen and not out in the light of day. Will rattle can products protect them after they’ve been sandblasted? I usually blast, epoxy, then go over with a black tractor paint (majic, alkyd enamel from tractor supply)

If so does anyone have any recommendations on a product I can get locally?

KBS Coatings sells chassis paint that's an MCU (Moisture Cured Urethane) product.
It works very well on small parts, but I don't know if you can get it locally.
You can order it from KBS or probably Amazon.