Toilet bowl wax rings with flange urethane wax no-seep no.3 inches boxed 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 inches tolerance in rough-in and bowl setting; compression gives positive seal. Holds up to 90 pounds psi at 85% c ompression. Urethane core reinforcement resists puncture by carrier coupling or flange. Boxed.