flymolo
Contributor
I have kubis on silicone zipseals with about the same spacing as that - base of the ring lines up with the thicker portion of the seal. I have had the rings on the same pair of silicone seals for 1.5 years now (~150 dives). I have heard that latex hold up better, but didnt want to buy new seals just for this. When these silicon rip I might go for latex.
I also have the showa 720 in 8/M on the 80mm kubi rings. It can fit, I don't remember it being crazy hard to load, but maybe soaking it in some warm water might make it easier to strech?
I put the ring down on a table with the big groove facing up and then I stretch the glove (with the o-ring folded inside) over the kubi ring. Requires a firm grip and some patience but it's the best way I've found so far.