How to Replace Rubber Gasket on Bathtub Drain
Replacing a worn-out rubber gasket on a bathtub drain is a simple plumbing task that can be completed in a few minutes with just a few tools. A faulty gasket can cause leaks, so it is important to replace it as soon as possible.
Tools Required:
- Adjustable wrench
- Phillips screwdriver
- New rubber gasket
- (Optional) Plumber's putty
Step-by-Step Instructions:
1. Turn off the water supply to the bathtub: Locate the shut-off valves under the sink or behind the bathtub and turn them clockwise to close them.
2. Remove the drain cover: Use the adjustable wrench to loosen the drain cover counterclockwise. Remove the cover and set it aside.
3. Lift out the stopper assembly: Reach into the drain and lift out the stopper assembly, which includes the stopper, rod, and gasket.
4. Remove the old gasket: Inspect the old gasket for any damage or wear. Gently pry it off the stopper assembly using a flat-head screwdriver or your fingernails.
5. Apply plumber's putty (optional): To prevent future leaks, you can apply a thin bead of plumber's putty around the base of the drain hole.
6. Insert the new gasket: Place the new rubber gasket over the stopper assembly, ensuring that it is seated properly.
7. Reassemble the stopper assembly: Reinsert the stopper assembly back into the drain, making sure that the gasket is properly positioned.
8. Install the drain cover: Replace the drain cover and tighten it clockwise using the adjustable wrench.
9. Turn on the water supply: Slowly turn the water supply valves back on and check for any leaks. If there are any leaks, tighten the drain cover further.
Tips:
- Use a rubber gasket that is the correct size and shape for your drain.
- If you do not have plumber's putty, you can use a silicone sealant instead.
- If the drain cover becomes loose over time, simply tighten it with the adjustable wrench.

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