Resilient, springs with bowl movement. Permanent. Will not rot. No-seep sleeve protects sealing area, extends bowl into waste line. Large up to 1/2 in tolerance in rough-in and bowl setting; compression gives positive seal. Holds up to 90 lb psi at 85% compression. Urethane core reinforcement resists puncture by carrier coupling or flange. Boxed. | HARVEY Toilet Bowl Wax Ring