A toilet flange is one of the most integral working parts of the toilet. Its proper installation and upkeep is very important. A PVC toilet flange is the type most often installed by plumbers and homeowners, due to its durability and cost. This type of flange is available at any hardware store or home improvement center. A PVC toilet flange only needs to be replaced when it is broken, and since this type of flange is very durable, you won't need to replace it very often. Many PVC toilet flanges last for years, especially in areas that don't have hard water.