Wax Seal Questions

I have a toilet that discharges from the back instead of the floor. Now I have worked on normal toilets before but not this type. I am going to have to replace drywall and all in here because of the leak, the questions I have are do you use a regular wax ring on this type of toilet and what problems do you run into ?

wax

No. Use a wax ring with the urethane insert labled "for use with wall outlet toilets", a foam rubber ring, or a wall hung composition ring.

I personly like the Zurn Neo-seal for wall hung or rear discharge water closets.