No wad used. My roll crimp is folded all thr way down to the OS card.
I just lightly brush the outer edge where the OS card and roll crimp meet to waterproof them. Then I brush an extremely light coat over the center of the OS card to completely seal it. Figure it will help keeping moisture and rain out if the weather doesn’t cooperate out in the turkey woods. Never tested it in wet conditions yet but used my #6 loads brushed the same way to collect a double bearded Gobbler last year. I didn’t seal them all the way to the top of hull if that’s what you were asking. I think the flash of my camera made the inside of my hull crimps look shiny. Photo without the flash still looks a bit shiny….
I used a little vaseline in roll pin crimper. Could be shiny yet from the lube even though I wiped it out, and, or, the hull might have shined up from the friction from the crimp process im guessing.