BlueSeal Toilet Donut Seal Ring - Superior to Standard Wax Rings - Ends Toilet Base Leaking and $ubfloor Damage Advanced Synthetic Rubber Remains Pliable at Temperature Extremes Tolerates Uneven Mating Surfaces and Minor Toilet Rocking Antibacterial Additive Locks Out Odor, Mold and Mildew Installs Exactly the Same as Wax Rings - No Special Tools Required Easy to Remove, Clean and Replace upon Toilet Removal