What Is a Toilet Flange?
A toilet flange is a fitting that connects a toilet to the drainpipe and anchors it to the floor. The flange sits at the drain opening beneath the toilet. It has holes for mounting bolts and a surface that supports a wax ring or another toilet seal.
Quick Facts About Toilet Flange
Category
Toilet installation component
Used for
Connecting and securing a toilet
Common confusion
The flange is separate from the wax ring
Also called
Closet Flange, Toilet mounting flange
Often discussed with
Toilet Installation
Key Takeaways About Toilet Flange
- The flange has mounting holes for toilet bolts.
- A sound flange helps keep the toilet stable and sealed.
- The flange is not the wax ring.
How Toilet Flange Works
A toilet flange rests around the drain opening below the toilet. Its center aligns with the drainpipe, while its outer surface meets the floor. Mounting bolts slide through flange openings and hold the toilet base in place.
Related glossary terms: Wax Ring, Drain Trap, Supply Line.
The flange also gives the toilet seal a firm landing surface. A wax ring or another approved seal sits between the toilet outlet and the flange. The seal blocks water and sewer gas from passing through the joint.
During toilet installation, the flange must sit securely and line up with the toilet outlet. A loose, damaged, or poorly positioned flange can let the toilet rock or leak. The floor and drain connection also guide the repair or replacement method.
Expert Note
When we install a toilet, we check the flange for movement, damage, and proper alignment. We also inspect the mounting points and the seal area before setting the toilet, since a stable connection supports a clean installation.
Toilet Flange in Practice: A Real-World Example
During a toilet installation, the flange sits around the drain opening and receives the toilet bolts. The installer checks its position, sets a new seal, and secures the toilet so the base stays steady.
Related Services
Related Terms
Wax Ring
A Wax Ring is a soft sealing gasket that fits between a toilet and the drain…
Drain Trap
A Drain Trap is a curved section of drain pipe that holds a small amount of…
Supply Line
A supply line is a flexible or rigid tube that carries clean water from a shutoff…
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