In plumbing, a wax seal ring (also called a toilet wax ring) is a circular gasket made of wax that creates a watertight and airtight seal between the base of a toilet and the toilet flange on the floor.

Purpose:
Prevents leaks of water and waste at the toilet’s base.
Blocks sewer gases from escaping into the bathroom.
Helps keep the toilet stable and secure in place.
Features:
Made from pliable wax that molds to surfaces for a tight seal.
Sometimes reinforced with a rubber or plastic sleeve for extra protection.
Designed for one-time use (must be replaced if the toilet is removed).
Common Uses:
Toilet installations (new builds).
Toilet replacements or repairs.
Fixing leaks at the base of a toilet.