closet flange (also known as a toilet flange) is a pipe fitting (specifically, a type of

flange A flange is a protruded ridge, lip or rim (wheel), rim, either external or internal, that serves to increase shear strength, strength (as the flange of a steel beam (structure), beam such as an I-beam or a T-beam); for easy attachment/transfer o ...

) that both mounts a

toilet A toilet is a piece of sanitary hardware that collects human waste (urine and feces) and sometimes toilet paper, usually for disposal. Flush toilets use water, while dry or non-flush toilets do not. They can be designed for a sitting p ...

to the floor and connects the closet bend to a drain pipe. The name comes from the term "water closet", the traditional name for a toilet. Closet flanges are typically made of

brass Brass is an alloy of copper and zinc, in proportions which can be varied to achieve different colours and mechanical, electrical, acoustic and chemical properties, but copper typically has the larger proportion, generally copper and zinc. I ...

cast iron Cast iron is a class of iron–carbon alloys with a carbon content of more than 2% and silicon content around 1–3%. Its usefulness derives from its relatively low melting temperature. The alloying elements determine the form in which its car ...

, ABS, PVC, and

lead Lead () is a chemical element; it has Chemical symbol, symbol Pb (from Latin ) and atomic number 82. It is a Heavy metal (elements), heavy metal that is density, denser than most common materials. Lead is Mohs scale, soft and Ductility, malleabl ...

. In a typical installation, the closet flange is mounted on top of the floor with the hub fused around the drain pipe. A wax ring (or waxless) is used to seal the gap between the flange and the bottom of the toilet. The toilet is bolted to the flange, not to the floor.

References

{{Reflist Toilet components