My toilet's upstairs are wall outlet, and one leaks. I pulled it this morning and they plumber who installed it 2 years ago used a stadard wax ring. I am reading online that you are not supposed to use a standard wax ring. I can set a normal toilet with great skill and aplomb, but this wall outlet is beyond me. Anyone ever do this and know what kind of gasket you are supposed to use?
I am going to buy a new one, so it could be an American Standard. I had picked out a Kohler, but it doesn't really matter to me. What does matter is not having the new one cause $2,000 of damage to my hardwoods again.
Look for a sponge-gasket for a wall-hung toilet. Be sure to have someone there to help you with the removal and installation of the toilet as they're rather heavy.
Wall Outlets are about 100% of commercial applications, so I feel somewhat confident they can be installed without leaking. Obviously not by my last plumber, though.
Mine leaked and I had to call three plumbers before I found one that could handle the job. Of course, I live in BFE. They had to come from Kingsville.
I would not ever put a well mount in my own home because of the leaking problems. But if I had to, I would call the highest high end commercial plumber I could find to do the job.