I've got a 1/2 size sem kit of pro seal that I was planning to seal these in with. But, I've been holding off because I know it won't take ether entire 1/2 size stick, so I wanted to wait and see if I had any other pro-seal jobs so that I could do it all at once and not waste the extra. Finally decided that it needed to be done, and I don't have any other pro seal jobs in the forceable future. These had been clecoed in fora while now, with all the mounting hardware already done, so it didn't take very long at all.