How to Replace a Toilet Wax Ring

When to Replace the Wax Ring

The wax ring creates a watertight seal between the toilet base and the drain flange in the floor. Signs of a failed wax ring include water seeping from the base of the toilet during or after flushing, a sewer gas smell near the toilet, and staining or damage to the ceiling below a second-floor bathroom. Wax rings do not have a set lifespan — they can last decades if the toilet remains stationary, but rocking, movement during cleaning, or improper installation can cause premature failure.

Removing the Toilet

Turn off the water supply valve and flush the toilet, holding the lever to drain as much water as possible. Sponge out any remaining water from the tank and bowl. Disconnect the supply line from the fill valve. Remove the tank bolts and separate the tank from the bowl (optional, but it makes the bowl much lighter and easier to handle). Remove the closet bolt nuts from the base and gently rock the bowl to break the wax seal. Lift the bowl straight up and off the bolts, then set it on old towels with the bottom facing away from flooring to protect against wax stains.

Preparing for the New Seal

Stuff a rag into the open drain flange to block sewer gases while you work (do not forget to remove it before reinstalling the toilet). Scrape all old wax from the flange and the bottom of the toilet outlet horn using a plastic putty knife. Inspect the flange for damage — it should be level with or slightly above the finished floor, and the bolt slots should be intact. Install new closet bolts in the flange slots, positioning them evenly on each side.

Installing the New Ring and Resetting the Toilet

Place the new wax ring on the flange, centering it over the opening (or place it on the toilet horn if you prefer). Remove the rag from the drain. Carefully lower the toilet straight down, aligning the bolt holes with the closet bolts. Press down firmly with your body weight to compress the wax ring — do not rock or twist, as this can deform the seal. Thread the washers and nuts onto the bolts and tighten alternately, a few turns at a time, until the toilet is firmly seated. Reconnect the supply line, turn on the water, and flush several times while checking for leaks.