Fluidmaster 7514 Flanged Wax Ring Kit, Plastic, For: 3 in and 4 in Waste Lines

Extra thick and reinforced to retain shape. The reinforced wax ensures that the wax does not break-free from itself or breaks away from the surfaces it is binding to or when the wax is being applied to the toilet and flange. This reinforcement allows the wax to stay intact and make a good seal.