Zurn Z1200-NEOSEAL-GSKT-4 4" Bonded Neo Seal Closet Gasket Kit P N 669550809 Z1200NEOSEALGSKT4, Black, 4 Inch

Worked last or a charm. I did 2 toilets with them. Simple and easy to use.

Our 1971 built house has wall mounted toilets. Someone in the past replaced the seal with a wax ring. It started leaking a few weeks ago. Once we knew what the problem was, I ordered and replaced the wax ring with the correct gasket. No LEAKS, easy installation. There is a film on each side that must be pealed off to expose the adhesive on the gasket--holds it in place as you replace the toilet on the wall. Be sure to align the toilet with the pipe so you don't start leaking again. I had to put a piece of baseboard under the toilet to raise it so it aligned with the pipe. Tighten carefully...you don't want to crack the porcelain. Around here these toilets are about $800 to replace, if you can find one. You may need two people to install it...they're heavy and can be awkward.

Perfect for for my Crane Walsan rear mount toilet. Exact diameter and width needed, and adhesive stuck nicely, no leaks after installation

It works, the adhesive isn't he greatest, make sure you clean the sealing surface thoroughly (I used acetone to remove the residue from the previous wax/composite seal).

Bought a house from the 60's with wall mount toilets. Plumber told me that they used a different kind of gasket then the traditional wax ring. Ordered this "gasket" and was at first incredulously disappointed thinking that I had gotten scammed. The thing is literally a piece of dense foam with sticky tape on both sides. But hey... It seems to work. No leaks and it was easy to install.