BURLINGTON, WISC. — The latest innovation from Korky raises the bar yet again with the development of a product selector tool, Korky Toilet Toolbox. The Toilet Toolbox is not only a selector tool to ...

The seat disk predates the Korky flapper, so your toilet must be really old if it has a flush valve that uses one. It’s a flat rubber disk that fits over the valve opening, held in place by water ...