Best Toilet Flappers – 2021 Complete Guide

| Last Updated: December 17, 2021

If you notice that your flushing toilet creates an annoying hissing sound, especially after you have flushed, it could mean that you need to replace the rubber flapper. Not only can the noise be irritating, that hissing is actually a sign that your toilet is wasting water. Wasted water costs you money on your monthly water bills and it is also bad for the environment.

Stop dealing with a damaged or leaky flapper and replace it with a high-quality option today! 

Comparison of the Best Toilet Flappers

IMAGEPRODUCT
  • Adjustable for maximum water savings
  • Size: 2 inch
  • Material: Rubber
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  • Works best with 1.6 and 1.28 GPF toilets
  • Size: 3 inch
  • Material: Rubber
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  • Best for the Money
  • Size: 3 inch
  • Material: Rubber
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  • Best American Standard Toilet Flapper
  • Size: 2 inch
  • Material: Rubber
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  • Best Kohler Toilet Flapper
  • Size: 2 inch
  • Material: Rubber
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  • Best Toto Toilet Flapper
  • Size: 3 inch
  • Material: Plastic body, rubber sealing
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How to Choose the Right Toilet Flapper

There are countless toilet flappers out there, which can make choosing the right option somewhat difficult. This is why we are going to go over some factors you should take into consideration while you are shopping for a new toilet flapper:

Material

Toilet flappers are available in different materials. Given that certain materials create a better seal than others. Typically, flexible rubbers tend to work better than stiff plastic toilet flappers.

Chain Quality

The best toilet flappers have corrosion resistant chains that are made from durable materials, like stainless steel. Your toilet flapper will be of no use to you if the flapper chain deteriorates and breaks. You also want to avoid rust in your toilet water, as it can stain the water tank and toilet bowl, especially when you flush.

Compatibility

Another factor is how compatible the toilet flapper is with your toilet. Check for the width of the flapper and make sure it properly matches your toilet. Most flappers have a compatibility list, which will list modern toilets they work with.

Floater Quality

Most toilet flappers use a floater, which helps keep the chain elevated and helps the water flow stop when the tank is full. Look for a high-quality floater that will not deteriorate. The last thing you want to do is fully replace your toilet flapper because the floater only lasted a year or two.

Korky 3060BP

Affordability

While it is worth investing in a high-quality toilet flapper, there is no need to spend a significant amount of money on one. In most cases, you can get a high-quality toilet flapper for under $50.

Ease of Installation

Make sure you are choosing a toilet flapper that you can install yourself. You do not want to have to call out a plumber just because you need to replace your toilet flapper or flush lever. Ideally, you will be able to switch out your old toilet flapper with a new one on your own, regardless of your experience level.

Reviews of the Best Toilet Flappers

Now that we have explained some of the features you should look out for when you are shopping for a new toilet flapper, we can go over some of our top picks for the best options on the market today. We’ve looked at hundreds of toilet flappers, so you don’t have to!

Best Overall

Fluidmaster 502P21

Fluidmaster 502P21 PerforMAX Universal Water-Saving Long Life Toilet Flapper for 2-Inch Flush Valves, Adjustable Solid Frame Design, Easy Install, Red, 1 pack

Specifications

Size: 2″

Material(s): Rubber

Compatible With: Universal

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Review

The 502P21 Universal Toilet Flapper was designed to be one of the longest lasting toilet flappers available anywhere. The adjustable seal helps save water and makes sure that your toilet does not create that irritating hissing sound that can happen when your flapper allows a leak. All of the mental components, including the chain, are made from corrosion-resistant materials.

Its universal design means that it is compatible with almost every type of flushing toilet, this includes just about any toilet that ranges between 1.28 to 3.5 gallons per flush. What we really liked was the unique anti-microbial band, which prevents the buildup of harmful types of bacteria. This rubber toilet flapper helps prevent unpleasant smells from rising out of your toilet water.

Bottom Line

Overall, this is a really great toilet flapper. Fluidmaster designed it to save money and water, which is really useful, especially when you consider its budget-friendly price. The fact that it can self-adjust to create a superior seal means that you barely have to do anything after installation.

Pros

Self-adjusts to find the maximum flush efficiency 

Rigid frame helps to align the flapper on every single flush

Durable material will not deteriorate, even in highly chlorinated water

Affordable price with an option to save even more money by buying it in bulk

Material naturally prevents and inhibits the growth of harmful types of bacteria

Cons

Somewhat tricky to install

Runner-up

Korky 3060BP

Korky Toilet Flapper Red for Universal 3 in.

Specifications

Size: 3″

Material(s): Rubber

Compatible With: Universal

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Review

Korky Toilet Repair is a proudly American brand that has built a reputation for making high-quality parts for repairing toilets. This Universal Toilet Flapper is designed to fit most Delta, American Standard, Gerber, and Glacier Bay toilets. Not only can it replace a damaged toilet flapper, but it can also even replace functioning toilet flappers that do not have a proper seal. This is because the extra-wide design helps prevent even the smallest leaks.

It is incredibly easy to install and the corrosion-resistant design means that it will last for many years to come. We liked that it is available at an affordable price, but make sure you do your research to make sure it is compatible with your particular toilet.

Bottom Line

If you are fed up with having to deal with the hissing and water loss that comes from annoying toilet tank leaks, the Korky Universal Toilet Flapper could be the perfect solution. Its adjustable design and extra wide fit are really effective at stopping leaks. Just make sure it is compatible with your specific toilet, as some cannot accommodate a larger toilet flapper.

Pros

Backed by a 5-year warranty

Stainless steel chain and attachment point

Designed and manufactured in the United States

Universal fit, means it is designed to work with a wide variety of toilet brands

Chlorine resistant rubber body will not deteriorate due to exposure to water chemicals

Cons

3-inch diameter can be too large for toilets with low-capacity water tanks

Best for the Money

Korky 2023BP

Korky 2023BP Universal Flapper for Toto Toilet Repairs - 3 Pack

Specifications

Size: 3″

Material(s): Rubber

Compatible With: Universal

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Review

This 3-inch toilet flapper from Korky was specifically designed to fit all models of TOTO flushing toilets. It is made from a long-lasting rubber material that has enough flexibility to ensure a perfect seal. This means it can effectively stop even the smallest leaks.

We liked that it has 8 unique settings, which means it can fit all TOTO toilets, as well as many other types. The stainless steel chain and attachment point also help extend the lifespan of this toilet flapper. The budget-friendly price and the fact you get 3 toilet flappers in one package means that purchasing this Korky toilet flapper is a bit of a no-brainer!

Bottom Line

Despite its low price, this toilet flapper is a really high-quality option. It creates an outstanding seal and is more than durable enough to last for many years. It is really easy to install, especially if you are dealing with a TOTO toilet. If you have a TOTO toilet and you are looking to save a little bit of money, you cannot go wrong with this option!

Pros

Budget-friendly price

Stainless steel chain and attachment point

Adjustable design means it has 8 settings for a perfect fit

Made from a durable, yet flexible rubber that ensures a tight seal

Listed as a genuine replacement part for TOTO toilets, so it will not impact the warranty

Cons

Designed primarily with TOTO toilets in mind, so it might not work properly if your toilet was made by another brand

Best American Standard Toilet Flapper

American Standard 7381129 – 200.0070A

American Standard 7381129-200.0070A Universal Flapper and Chain with Float for 2-Inch Flush Valves , Black

Specifications

Size: 2″

Material(s): Rubber

Compatible With: Universal

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Review

Given that American Standard is one of the most popular toilet brands on the planet, it makes sense to highlight a toilet flapper that was specifically designed to work with them. As we have come to expect from all American Standard products, this toilet flapper is made to a high standard. It is flexible enough to create a water-tight seal, but it remains durable enough to last for years. It has a stainless steel chain, so you will not have to worry about corrosion and rust.

The bright yellow floater is also made to last, so you will not have to worry about it degrading and detaching from the chain. We also liked how easy it is to install and the fact it even works with some toilets outside of the American Standard line.

Bottom Line

If you own an American Standard toilet and you are looking for a replacement toilet flapper, look no further. This toilet flapper is made from high-quality materials and it is made to last. The fact it is backed by a one-year warranty is reassuring. Given that it can be installed in just minutes, it is a really great no-hassle option.

Pros

Easy to install

High-quality floater keeps the chain taut

Stainless steel chain and attachment hook

Durable design that was engineered to last

Specifically designed to fit American Standard toilets

Cons

Designed for American Standard toilets, so it is not always compatible with toilets made by other manufacturers

Best Kohler Toilet Flapper

Kohler GP85160

Kohler (BLUE PART GP85160 FLAPPER WITH FLOAT), 2

Specifications

Size: 2″

Material(s): Rubber

Compatible With: KALLISTA toilets and Kohler Wellworth 3114, 3407, 3420, 3421, 3422, 3423, 3428, 3432, 3433, 3438, 3458, 3481, 3558, 11450, 11470, Revival 3455, 3555, Iron Works 3456, 3463, Kathryn 3484, Portrait 3591, 3490, Epernay 14178-EP, 14247-EP, Alouette 14247, 3491, English Trellis 142

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Review

This blue toilet flapper was specifically designed to work with a wide array of Kohler toilets. As you would expect from a genuine Kohler product, it is made from the highest quality materials and it is designed for outstanding performance. Durable materials prevent leaks and ensure a tight seal.

Given that it is a genuine Kohler product, it is surprising how affordable it actually is. In most cases, when you are dealing with an official product, you expect to pay a higher price; however, this Kohler toilet flapper is even cheaper than some of the generic aftermarket options.

We liked that it came with a rust-proof stainless steel chain and that the main piece is made from an extremely durable synthetic rubber material.

Bottom Line

If you own a Kohler toilet and your current toilet flapper needs to be replaced, we highly encourage you to consider this genuine Kohler part. It works really well and does not cost nearly as much as you would suspect. Overall, it is a great toilet flapper that will prevent leaks and stop your toilet from leaking unnecessary water.

Pros

High-quality floater

Budget-friendly price

Stainless steel chain and attachment ring

Compatible with almost all types of Kohler flushing toilets

Engineered to have the same quality as an original Kohler toilet flapper

Cons

Not a universal toilet flapper, as it was designed specifically for Kohler toilets

Best Toto Toilet Flapper

TOTO THU500S

TOTO THU500S Replacement Flapper for Select 3 Inch Flush Valve Tanks, Red (1 Pack)

Specifications

Size: 3″

Material(s): Plastic

Compatible With: Universal

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Review

The TOTO THU500S is the updated version of the previous THU499S model. TOTO was able to correct some of the leaking issues that occurred with the previous model, so this toilet flapper will create a water-tight seal. The rubber edge is a nice touch, as the best toilet flappers usually use rubber for preventing leaks.

The sloped design is the real highlight, as it helps the flapper settle into position after the toilet has been flushed. The rigid material also ensures it will hold its shape over time.

Bottom Line

This is an excellent toilet flapper, but just make sure you check compatibility with your toilet. If you have a TOTO toilet, there is a good chance it will work just fine; however, those with other types of toilets might run into problems. The leak-proof design really helps with water retention and works well at preventing that hissing noise you get with a faulty toilet flapper.

Pros

Stainless steel chain

Contains detailed set-up instructions

Designed for flawless compatibility with most TOTO flushing toilets

Durable polypropylene body with rubber border creates a perfect seal

Unique sloped design automatically corrects itself if the body comes down on an improper angle 

Cons

Does not work with many non-TOTO flushing toilets

What is a Toilet Flapper?

Toilet flappers are the small pieces that provide the seal for the flush valve in a toilet. They control the volume of water released into the bowl when a person presses or pulls the flushing button or lever. Toilet flappers tend to wear out, which can lead to leaks and an annoying hissing sound. Luckily, they tend to be inexpensive and easy to replace.

The toilet flapper itself will usually consist of a rubber or plastic plunger, which seals the drainage hole, a metal chain, which is used to lift the plug, and a floater, which keeps the chain elevated. They are relatively simple, but choosing a good one can make a huge difference to your toilet’s overall performance.

How Does a Toilet Flapper Work?

As mentioned, a toilet flapper is a small contraption that sits inside a toilet tank. It is responsible for draining water from the tank into the toilet bowl when you flush. When you flush the toilet, a chain that is attached to the flapper lifts it. This stops the flapper from plugging the drain that separates the tank from the bowl. After enough water has passed, the flapper then drops back into position and blocks the drainage hole. Once this takes place, the water tank can once again fill with water.

A good toilet flapper will rise up properly when you flush, but then completely seal off the drainage hole once the toilet has completed its flushing cycle.

Fluidmaster 502P21

What Size Toilet Flapper Do I Need?

When you are shopping for a new toilet flapper, one of the most important pieces of information you will need is your toilet’s GPF rating. This number refers to the gallons of water that are passed from the water tank to the toilet bowl when you flush. Toilets with a higher GPF rating usually require a larger toilet flapper, while those with a lower GPF rating use a smaller flapper. 

How to Measure a Toilet Flapper

To measure for a toilet flapper, you need to know the diameter of the drain inside your toilet tank. If it measures 1 7/8” or 2 3/8”, you need a 2-inch toilet flapper. If it measures 3” or more, you need a 3” flapper.

Different Types of Toilet Flappers

The three basic types of toilet flappers are as follows:

Seat Disk Toilet Flappers

These are the oldest type of toilet flapper. They consist of a small circular disk, which covers the drainage pipe and prevents water from flowing through it. When the toilet is flushed, the flapper lifts and exposes the pipe. They do not have a floater attached, so they do not work as well as the more modern toilet flappers.

Tank Ball Toilet Flapper

As the name suggests, these flappers consist of a small rubber ball that sits over the drainage hole. They are attached by a metal chain and lift when the toilet is flushed. For them to work, the chain has to be the exact right length, otherwise the ball will not return to the proper position and excess water will leak after the flushing cycle is complete.

Rubber Toilet Flapper

These are now the most common type of toilet flappers. In fact, each of the flappers we reviewed above falls into this category. They work like a basic cap, which plugs the drainage pipe between flushes. They use a chain and a floater to control the movement of the rubber or plastic cap during the flushing cycle.

Photo credit: korky.com

Toilet Flapper with Float vs Without

You may have noticed that some toilet flappers have a float, or floater, while others are only attached by a chain. The float is designed to help the flapper stay open just a little bit longer, which allows more water to enter the bowl for a more thorough and powerful flush. While this may sound great, some people prefer to conserve water and only desire a small volume of water when they flush their toilet.

If you find that your toilet clogs on a regular basis, it might be worth using a float on your toilet flapper, as a more powerful flush will help reduce the frequency of blockages. The most important thing is finding a toilet flapper that actually fits your specific toilet. The decision to add, remove, or reposition the float can be made after you have a flapper that fits properly.

Top Brands in the Toilet Flapper Space

To help you have a better understanding of toilet flappers, we are going to go over some of the best brands in the industry.

Korky Toilet Repair

Korky Toilet Repair has a reputation for making high-quality toilet replacement parts. What really sets the brand apart is their commitment to designing and manufacturing all of their products in the United States. Their domestically-made toilet flappers are known to have a perfect seal. The Korky Toilet Repair brand got its start in 1954, which was the same time they released their first toilet flapper, which completely revolutionized the plumbing industry.

Fluidmaster

Fluidmaster is one of the leading toilet repair brands in the world. Their simple, yet effective products are top choice amongst plumbers everywhere. The brand is known for its innovative designs. They got their start in 1957 when their founder created a new type of valve that helped reduce the amount of water toilets used per flush. Today, they continue to create revolutionary products that are known for their reliability. 

TOTO

TOTO is one of the world’s leading manufacturers of luxury toilets. They also make high-quality replacement parts for all of their toilets, including innovative and reliable toilet flappers. If you have a TOTO toilet, you should consider buying your replacement toilet flapper directly from TOTO, as the quality is second to none.

Conclusion

While a new toilet flapper might not be the most glamorous purchase, a well-made flapper can help save you money on wasted water and put a stop to any annoying hissing sound that comes from your toilet. By choosing one of the six toilet flappers we reviewed above, you will know that you are buying a high-quality product. Just make sure that you check for compatibility with your toilet.

People Also Ask

Are Toilet Flappers Universal?

Unfortunately, toilet flappers are not universal. While some toilet flappers are labeled as being universal, this usually just means that they are compatible with more than one brand. Before you buy a new toilet flapper, make sure you check compatibility with your toilet.

How Long Do Toilet Flappers Last?

How long a toilet flapper lasts depends a lot on the quality of the flapper. If you choose a well-made toilet flapper, it should last between 4 and 5 years. Make sure you check on the condition of your flapper, as it will impact the overall performance of your toilet.

Can You Replace Just the Toilet Flapper?

Yes, you can just replace the toilet flapper. Luckily, you can just switch out the toilet flapper and fix any leaking issues your toilet might have. This means that annoying problems can be addressed with a simple repair.

How Much Does It Cost to Replace the Toilet Flapper?

Luckily, most toilet flappers are designed to be easily replaced, which means you can usually just replace them yourself in as little as 10 minutes. This means you do not have to spend any money beyond the cost of the flapper itself, which is almost always under 30 dollars.

Welcome! We hope you’ll find the job costs of home improvement projects useful when you’re deciding whether to do a job yourself vs. hire a contractor. We’re the authors of 20 home improvement books, most notably Home Improvement for Dummies©, Bathroom Remodeling for Dummies©, Carpentry for Dummies©, Plumbing for Dummies©, and Painting and Wallpapering for Dummies©. Our most recent book Fix It and Flip It is in its second edition. We’ve appeared as home improvement experts on television programs such as CNN, Dateline, the Today Show, HGTV and many others.