Never heard of them but look interesting. I guess it would just be an extra layer, tho very thin, of confidence and may come in really handy for you until you get your leaks resolved.
Congrats on the marathon!!
Here is something I posted on another thread about Eakin seals:
There are 2 types: Eakin Seals and Eakin Strips. I buy the Eakin Seals, which look like a flat round disk, and make my own strips since the only area that really degrades quickest on me is right around the stoma. Think of them as a firm, but sticky, stomahesive paste (if you ever have used that). I simply cut the seals into strips and line the back side of the wafer just around the stoma opening hole. You can also apply it directly to the skin right around the stoma. I find applying it to the wafer better for me. I can also press it firmly against the wafer, esp around the edges of the already cut or pre-cut hole in the wafer to create a really tight seal between the wafer and the Eakin before applying to my skin. Some folks use the entire Eakin Seal by cutting the area that fits around the stoma the same size that you cut your wafer. Eakin Seals come in a small size and a large size. Small being about 3" across from one side to the other, and large being about 6" across. Again, I personally just need the extra help just around the stoma and cutting it into strips works fine for me. I do know that some folks have issues with the wafer sticking around the outside edge too and either placing a few strips around that edge or using the whole Eakin seal works for them.