geezer wrote:

My wife (and I love her) is on the heavy side, and so over a short
period of time her continued use of the johns in my house cause the
wax seals to begin leaking - from her weight I am thinking.

So - I have tried a couple of different types of wax rings, but they
all leak after a while. What else can I do?

Weight should have nothing to do with it,
unless the floor is flexing excessively.

Now, if the toilet is "rocking" because it
is poorly anchored, that is another matter.
A rocking bowl will quickly break the seal.

Here's one of several that is not wax:
http://plumbing.hardwarestore.com/51...al-112053.aspx

Jim