Danco?s Perfect Seal with Toilet Seat Bolts is an innovative product that takes the guesswork out of toilet installation. Whether your flange is above the floor or below the floor due to re-tiling the Perfect Seal guarantees a perfect seal the first time every time. The patented seal design combines specially designed rubber gaskets with encapsulated wax to form a seal that is three times stronger than a wax ring without the mess. Unlike wax rings the Perfect Seal Wax Ring stabilizes toilet bolts and allows the toilet to be repositioned as needed.