Fluidmaster 7513 Extra Thick Wax Toilet Bowl Gasket with Flange, for 3-Inch and 4-Inch Waste Lines NO LEAKS: Seal your toilet to the floor with extra thick protection EASY-TO-INSTALL: Even with or below the floor ADAPTABLE: Fits 3 and 4 waste lines REPLACE OLD, LEAKING WAX SEALS with 40% more wax than standard wax seals BONUS: Polyethylene flange included