The seal, on the bottom of a toilet, where it rests on the floor, is a gasket made of a ring of wax. You can buy a replacement at a hardware store. This inexpensive .
How to Fix a Toilet Seal. A pool of water forming beneath the toilet generally means that the wax seal between the toilet and the flange has failed. Repairing a
Replacing the wax seal on a toilet.yucky, but an easy home improvement.
Fluidmaster offers a wide variety of toilet wax rings that seal the toilet bowl to the floor.
Whenever you remove a toilet for any reason, replace the wax ring seal between the toilet and the toilet anchor flange (sometimes called a closet flange) .