About Kohler K-3589-0 Cimarron Comfort Height Elongated 1.6 gpf Toilet with AquaPiston Technology
Aquapiston universal gasket fits all KOHLER canister flush valve toilets. It has 90% less exposed seal material than a 3 flapper and is designed to fight leaks, wear, tear, shrinkage and swelling. The 3:2 ratio between valve intake and outlet harnesses the natural force of gravity and optimizes flush performance.