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How to Fix a Leaky Sink or Bathtub Stopper: A Plumber's Proven DIY Trick

How to Fix a Leaky Sink or Bathtub Stopper: A Plumber s Proven DIY Trick

Over time, sink or bathtub stoppers lose their seal, letting water drain even when closed. No need to replace the drain—a trusted plumber shared this simple, effective fix using white vinegar to dissolve limescale buildup.

How to Fix a Leaky Sink or Bathtub Stopper: A Plumber s Proven DIY Trick

Contents
  • 1. Adjust the cap screw
  • 2. Clean the seal
  • 3. Clean the metal ring
  • Result

1. Adjust the cap screw

How to Fix a Leaky Sink or Bathtub Stopper: A Plumber s Proven DIY Trick

For a watertight seal, tighten the screw at the bottom of the stopper. This pulls it down snugly, preventing leaks—say goodbye to drains that empty too quickly.

2. Clean the seal

How to Fix a Leaky Sink or Bathtub Stopper: A Plumber s Proven DIY Trick

If the stopper closes but still leaks, inspect the rubber seal for limescale. Soak it in a 50/50 mix of hot water and white vinegar to dissolve buildup and restore the seal.

3. Clean the metal ring

How to Fix a Leaky Sink or Bathtub Stopper: A Plumber s Proven DIY Trick

Scour the metal ring with a pad soaked in white vinegar to remove limescale. For stubborn deposits underneath, carefully run a knife blade between the ring and sink—watch for slips.

Result

And there you have it! Your stopper is watertight again. Quick, easy, and reliable for sinks and bathtubs alike. If the overflow is clogged, try this related trick.