Perfect seal guarantees a perfect seal on the first toilet installation, Unlike wax rings, perfect seal allows the toilet to be repositioned as needed, Maintains a tight seal when common toilet and floor movement occurs, Accommodates flange heights from 1/2 in. above the floor to 1-1/2 in. below the floor, Repositionable with no mess and three times stronger than a wax ring, Works with any drain size and stabilizes toilet bolts