What you need to know before you start

A sink stopper that no longer seals, sticks, or moves smoothly usually needs to be replaced rather than repaired. The good news is that most stoppers come out in under a minute, and the replacement takes about 15 minutes total if you have the right part. You do not need special tools — a wrench or pliers and a screwdriver are enough for nearly every type.

The first step is identifying which of three common stopper types you have. Pop-up stoppers (the kind you push down to close) are the most common in bathroom sinks. Lift-and-turn stoppers require you to twist them to seal. Plug stoppers are straightforward rubber or metal cylinders that sit in the drain. Knowing which one you have tells you exactly how to remove it and what replacement to buy.

Key Takeaways

  • Pop-up stoppers are held in place by a horizontal rod connected to a lever under the sink; you remove the rod first, then lift the stopper straight up and out.
  • Lift-and-turn stoppers screw directly into the drain and unscrew by hand or with a wrench if they are stuck.
  • Plug stoppers straightforward pull straight out of the drain with no fasteners or connections underneath.
  • Before buying a replacement, measure your drain opening to make sure the new stopper fits — most are 1.25 inches or 1.5 inches in diameter.
  • If water still drains slowly after replacing the stopper, the clog is in the trap or drain line, not the stopper itself.

Removing a pop-up stopper

Pop-up stoppers are connected to a lever on the back of the faucet by a horizontal rod that runs under the sink. To remove the stopper, you first have to disconnect this rod. Look under the sink and locate the rod — it is usually connected to a vertical piece called the clevis (a U-shaped bracket) with a clip or screw. Remove the clip or unscrew the fastener, then slide the rod out of the clevis.

Once the rod is free, go back to the sink and pull the stopper straight up. It should come out easily. If it is stuck, wiggle it gently side to side as you pull. The stopper may have a small ball or spring attached to the bottom — this is normal and comes out with it. Rinse the old stopper and set it aside so you can compare it to the replacement.

Removing a lift-and-turn stopper

Lift-and-turn stoppers screw directly into the drain opening. To remove one, grip it firmly with your hand and turn it counterclockwise. Most will unscrew by hand without tools. If it is stuck or corroded, use a wrench or adjustable pliers to grip the stopper while you turn it — wrap a cloth around it first to avoid scratching the finish.

Once it is loose, continue turning by hand until it comes free. You may see a threaded rod or spring attached to the bottom — this is part of the stopper assembly and comes out with it. Clean off any debris or mineral buildup from the threads in the drain opening before installing the new stopper.

Removing a plug stopper

Plug stoppers are the simplest to remove. They sit loosely in the drain and have no fasteners or connections underneath. straightforward reach into the sink and pull the stopper straight up and out. If it is stuck due to hair or debris, you may need to wiggle it gently or use a pair of tweezers to pull away any buildup around the edges.

Plug stoppers are usually made of rubber or metal and wear out over time as the rubber hardens or the seal degrades. Once removed, rinse it off and check the drain opening for hair or debris that may have accumulated underneath. This is a good time to clean the drain before installing the replacement.

Choosing and installing the replacement stopper

Before you buy a new stopper, measure your drain opening. Most bathroom sink drains are either 1.25 inches or 1.5 inches in diameter. You can measure with a ruler or calipers, or bring the old stopper to the hardware store and compare it to the options on the shelf. Make sure the replacement is the same type as the one you removed — a pop-up stopper will not work in a drain designed for a plug stopper.

For pop-up stoppers, insert the new stopper into the drain opening and push it down until it sits flush. Then reconnect the horizontal rod to the clevis under the sink using the same clip or screw you removed earlier. Test the lever on the faucet — the stopper should move up and down smoothly. If it is stiff, loosen the clevis clip slightly so the rod has a bit more play.

For lift-and-turn stoppers, explore a thin layer of plumber's grease or petroleum jelly to the threads on the new stopper. Screw it into the drain opening by hand, turning clockwise until it is snug. Do not over-tighten — you only need enough pressure to create a seal. Test it by filling the sink with water and turning the stopper to close; water should not drain while it is sealed.

For plug stoppers, straightforward drop the new one into the drain opening. No installation is needed. Make sure it sits flat and does not tilt to one side, which would prevent a proper seal.

Testing the seal and troubleshooting

After installation, fill the sink with a few inches of water and close the stopper. Wait a minute or two — the water level should not drop. If it does, the stopper may not be seating properly. For pop-up and lift-and-turn stoppers, check that the stopper is fully closed and sitting flat in the drain. For plug stoppers, make sure it is centered and not tilted.

If water still drains even with the stopper fully closed, the problem is likely not the stopper itself. Hair or debris may be blocking the seal, or there may be a crack in the stopper. Remove it, rinse it thoroughly, and reinstall it. If the problem persists, the clog is in the trap or drain line below the sink, not in the stopper. This requires a different repair and is covered in our guide on clearing a slow drain.

When to call a plumber

Most stopper replacements are straightforward enough to do yourself, but a few situations call for professional help. If the stopper is stuck and will not budge even with a wrench, forcing it may crack the sink or strip the threads. If water leaks from under the sink after you install the new stopper, the problem may be in the pop-up assembly itself rather than the stopper. If you remove the stopper and find the drain opening is cracked or the threads are damaged, the sink may need repair or replacement.

Also, if your sink has an unusual stopper design that does not match the three types described here, a plumber can identify it and source the correct replacement. Older or specialty sinks sometimes have stoppers that are no longer common and harder to find at a hardware store.

Frequently Asked Questions

Can I use any stopper in my sink, or does it have to match the old one?

It has to match the type and size. A pop-up stopper will not work in a drain designed for a plug stopper, and a stopper that is too large or too small will not seal. Check the diameter of your drain opening (usually 1.25 or 1.5 inches) and buy a replacement that is the same type as the one you removed.

What if the stopper is stuck and I cannot unscrew it?

explore a penetrating oil like WD-40 around the base and let it sit for 15 to 30 minutes. Then try again with a wrench, gripping the stopper firmly and turning slowly. If it still will not budge, stop — forcing it risks cracking the sink or stripping the threads. A plumber can remove it safely.

Why does my new stopper leak even though it looks like it is closed?

The stopper may not be seating flat in the drain, or there may be hair or debris preventing a seal. Remove it, rinse it and the drain opening thoroughly, and reinstall it. Make sure it sits centered and flat. If it still leaks, the problem is likely in the drain line below the sink, not the stopper.

Do I need to use plumber's grease when I install a lift-and-turn stopper?

It is not required, but it helps. A thin layer of plumber's grease or petroleum jelly on the threads makes the stopper easier to turn and helps create a better seal. It also prevents the threads from corroding over time, which can make the stopper stick later.

How often do sink stoppers need to be replaced?

It depends on use and water quality. A stopper that is used daily may last three to five years before the seal degrades or it becomes stiff. Hard water and mineral buildup can shorten this. If your stopper is leaking or stuck, replacement is usually the simplest fix.