The toilet sits on a slightly uneven slab floor. There hasn't been a leak the 50 years we have lived here. Any ideas? A: The most likely cause is that the wax ring around the closet flange is ...

The wax ring works like a gasket around the base of the toilet. It attaches to the toilet flange, the opening of the waste line. Today you can buy waxless rings made of rubber or plastic polymers ...