15 Best Toilet Flappers Reviews 2021 | American Standard

Toilet flappers are made up of rubber materials and part of the flush in your toilet tank. It seals the water and serves as a gate opening that releases the water to the bowl when you flush.

Toilet FlappersBut, these flappers will deteriorate or lose their value in your toilet tank. Thus losing its functionality to stop water from leaking from the tank to the bowl.

When this happens, water from the toilet tank will leak out and go straight to the bowl.

This will never stop flushing, and that’s very unethical since you are wasting a lot of water, approximately 200 gallons of water a day.

If your flapper is worn out thus, it is fitted loosely and will consequently increase your water bill up to a hundred dollars.

Buyer's Guide

The following buyer's guide provides you details regarding best toilet flappers, to minimize wastage of water at your houses or workplace.

Because messy toilet flappers are one of the main reasons for wastage of water.

A broken toilet flapper wastes a huge amount of water which leads to huge amounts of water bills.

What To Do When Your Toilet Flapper is Broken?

Did you ever give it a thought, as to what shall be done if your toilet flapper breaks?

And why your toilet bowl never stops on flushing water? And you consumed too much water because of that problem.

Well, probably it’s about time you replace that old toilet flapper of yours inside that tank in your toilet bowl.

There are lots of brand names to choose from if we discuss toilet flapper.

In this review, we present to you the best brands that are available in the market today thus saving your time in finding a good one for a replacement and value for your money.

But before that, there is a list of characteristics you must consider which are mentioned a bit later, below in the article.

Therefore, it is important to use one of the best toilet flappers to reduce the bill and water wastage.

But before making the ultimate decision, you must look at a range of their types and then choose the one according to your needs.

Types of Toilet Flappers

Toilet flappers come in two types: adjustable and non-adjustable.

Adjustable flappers are constructed to work well for toilets that use 1.28 gallons or 1.6 gallons of water in every flush. Hence, they come in different styles and sizes.

Whereas, non-adjustable flappers are made for toilets that use about 5 gallons or 3.5 gallons of water in one flush.


Most companies produce two sizes of flappers: 2 inches and 3-inch valve drain. It is important to note that 2-inch flappers have the flexibility and a solid frame where 3-inch valve drains accessible in a solid frame.

Frame Type

It is better to choose a flapper with flexible frames that comes with pure durable rubber. This is because they can fit in the latest flush valve drains.

Whereas, the solid frame is made of hard plastic materials, offer more durability, and are designed to prevent leaking as well.


Even though toilet flappers are not so expensive, you might find many cheap toilet flappers, but those are made up of low quality. If you pick a good quality flapper, it will provide you the best service for years.

Seat Disk

The seat disk is an important part of the toilet seat. It provides sealing and other features. While buying a seat disk, you need to make sure that the disk you are going to matches your requirements. It should be easy to install and tapered well for good adhesion.

Tank Ball

Tanks ball is used for filling the water tanks while avoiding overflow. While going for a specific tank ball, you need to make sure that it is made of good material, built to last, and includes a guide tip plus lift wire.

Top 15 Toilet Flappers Reviews

Take a look below, as our team has compiled reviews on 15 Best Toilet Flappers according to American standards:

1. Fluidmaster 502P21 Universal Flapper

The Fluidmaster 502 Performax 2” Water-Saving Flapper is one of the best choices for flush efficiency.

The PerforMAX saves water and enhances flush performance due to its water-saving adjustable dial design.

It is constructed with corrosive resistant materials and a solid frame that won’t bend for a secure seal. Therefore, it is said to be durable for a long life.

It is based on a universal design that fits most 2” flush valve models, best with 1.28 HET and 1.6 GPF toilets, and can work with 3.5 GPF.

Even though it has a highly efficient design, but it can be installed simply and easily, therefore, saving on DIY toilet repair time.

More photo & price on amazon.com


  • Longer Durability
  • Has Kink-free chain attached
  • Durable silicone seal
  • Simple installation
  • Universal flapper


  • Does not fit in all toilets

2. Korky 2021BP G-Max Toilet Repairs

The Fits TOTO G-Max 3″ Flapper by Korky features has an oversized sealing surface to fit large 3″ TOTO flush valves.

Its long-lasting red rubber resists chlorine, bacteria, city water treatment, hard water, and well water.

It is easy to install. The 2021 BP includes a flapper and a stainless steel chain.

More photo & price on amazon.com


  • It is Affordable
  • Can be installed easily
  • Resist chlorine and bacteria
  • Water-saving
  • Durable and long-lasting


  • Not compatible with all toilets


This Kohler’s Flapper package includes 2″ flapper with a float used in various 1.6 GPF two-piece toilets and also used in KALLISTA toilets.

It is blue, packaged with a float. Its dimensions are 5.2 x 3 x 1.8 inches.

More photo & price on amazon.com


  • Durable
  • Not so high priced
  • Made of imported materials


  • Time-consuming installation
  • Adjusting the float chain is a bit of a hassle


The Kohler Genuine Flapper for Two-Piece Toilets includes 3 1/4” flapper, used in various two-piece toilets with Class Five technology.

The flapper is made of corrosion-resistant material. Product dimensions are 5.2 x 4 x 2.5 inches.

More photo & price on amazon.com


  • Durable
  • Not so high priced
  • Made of imported materials


  • Time-consuming installation
  • Adjusting the float chain is a bit of a hassle

5. Fluidmaster 703AP4 Flapperless

The Fluidmaster 703A, designed to remove old, or inefficient Glacier Bay / Niagara Flapper-less Toilet fill valves while enhancing your toilet refill performance.

It is specially designed and manufactured to specifically fit Glacier Bay and Niagara Flapper-less Toilet models.

This toilet fills valve refills quickly, therefore, helping to increase your toilet’s performance.

This flapper can be installed quickly, easily, and is a cost-effective DIY solution to common toilet fill problems.

It is manufactured with good quality and durability which also includes materials that are long-lasting to offer you stress-free nights.

More photo & price on amazon.com


  • Simple and easy installation
  • Anti-siphon operation
  • Made up of Corrosion resistant ability
  • Has code approval


  • Only works with Glacier Bay and Niagara brands toilet

6. American Standard Flapper and Chain

The American Standard Flapper is a durable and reliable product. Its manufacturing involved quality engineering and construction. They are designed for your busy lifestyle.

Every part, hardware, and components are engineered to enhance the useful life of your American Standard products.

The brand’s products offer great performance and great looks.

More photo & price on amazon.com


  • Durable
  • Good quality product
  • Quality engineering and construction
  • Long-lasting


  • A bit pricey comparatively
  • Time-consuming to install

7. Mansfield Plumbing 630-0207

Mansfield Flapper Replacement, as well as the water sense product, works on all Mansfield toilets. It is 3 inches in size and is made up of rubber material.

The flapper comes in blue color and the package includes 3 of them in quantity. Product dimensions for this flapper are 2.5 x 6.1 x 8.1 inches.

More photo & price on amazon.com


  • Works on all Mansfield toilets
  • Made up of rubber
  • Durable
  • Easy to install


  • Comparatively expensive

8. TOTO THU500S Replacement Flapper

The TOTO Replacement Flapper is manufactured for use on a selection of TOTO 3 inches flush valve tanks.

It is adjustable for various tanks, replacing flapper part numbers THU138S, THU175S, THU331S, THU140S, THU299S, THU253S, THU277S, THU347S, THU275S, THU332S, THU369S, and THU499S, respectively.

Its body is made up of Polypropylene with a rubber sealing surface.

The package includes Flapper and chain along with instructions for set-up specific to the TOTO tank model.

More photo & price on amazon.com


  • Durable
  • Best value for money
  • Universal toilet flapper
  • Easy to set up and assemble


  • Only fits in specific TOTO models

9. American Standard 3-Inch Flapper

The American Standard Flapper is a durable and reliable product. Its manufacturing involved quality engineering and construction. They are designed for your busy lifestyle.

Each and every part, hardware, and components are engineered to enhance the useful life of your American Standard products.

The brand’s products offer great performance and great looks. The size of the flapper is 3 inches, and it is for use with the American Standard Cadet 3.

More photo & price on amazon.com


  • Durable
  • Good quality product
  • Quality engineering and construction
  • Long-lasting


  • A bit pricey comparatively
  • Time-consuming to install

10. American Standard 3″ Toilet Tank Flapper

The American Standard toilet tank flapper is made of good quality brings functionality to your home while offering a trusted product.

This product features a high-fi style for upper-class consumers. This item captures the attention of potential buyers because of its old-style elegance.

And add a splash of color to brighten up your toilet. The product dimensions are 3 x 3 x 5 inches.

More photo & price on amazon.com


  • Elegant looking
  • Attractive due to bright colors
  • Good quality
  • Durable


  • Old style
  • Comparatively expensive

11. Plumb Pak Gerber Vinyl Toilet Flapper

The instructions for installation are to Turn off the water supply and flush to empty tank, remove flapper or tank ball, attach flapper to ears on the flush valve, adjust the length of chain and attach the chain to flush lever.

Now, turn on the water and flush to test.

More photo & price on amazon.com


  • Sturdy


  • Not well described therefore product might not sell well.

12. Delta Faucet RP72472 Flapper

The Delta Faucet is made to original specifications and is rigorously tested to ensure quality performance.

The product dimensions are: 5.5 x 4 x 2.2 inches. The product is made up of ABS plastic and rubber.

More photo & price on amazon.com


  • Durable
  • Well tested
  • High quality
  • Reliable
  • The good quality rubber used


  • Pricey

13. TOTO THU499S Universal Flapper

The TOTO Flapper is universally used for most TOTO models requiring a three-inch flapper.

It is made up of imported rubber, and its dimensions are 7.5 x 6 x 3 inches.

So if you have a TOTO toilet you can easily trust this product.

More photo & price on amazon.com


  • Durable rubber
  • Best value for money
  • Long-lasting
  • Universal toilet flapper
  • Easy to assemble


  • Only fits in particular TOTO models

14. Plumbcraft Water Saving Forever Toilet Flapper

Plumbcraft Water Saving has a universal long-life rigid body toilet flapper. It is made of polypropylene plastic.

It is suitable for most tank-style toilets including 1.6-gallon low flush toilets.

The package includes a brass ball chain and hooks. Product dimensions are: 2.5 x 6.1 x 7.3 inches.

More photo & price on amazon.com


  • Universal use
  • Long life
  • Durable and strong body


  • Plastic is not flexible and might break

15. Keeney Adjustable Water-Saving Flapper

The Keeney Adjustable Flapper fits American standard, Kohler, Eljer, or any flush valve with a similar thread size.

The package includes adjustable water saving flapper with timing cone. Product dimensions for the Keeney Flapper are 13 x 5 x 9 inches.


  • Universal use
  • Durable


  • Price is a bit high

Frequently Asked Questions

How long do toilet flappers last?

Toilet Flappers are usually considered as the “replaceable parts” that normally on average last for 4 to 5 years.

However, if you are using a bowl cleaner that contains toxic chemicals, then some flappers might even last a year.

Why is my toilet flapper leaking?

The most ordinary reason is when the flapper is not placed accurately and is not sealed against the valve seat.

Due to the loose-fitting, water continuously leaks from the tank into the toilet bowl.

Thus, the flapper is supposed to be in the right position to make way for the full flash.

Are all toilet flappers the same?

Toilets vary in shape and size, so do the parts of the flush valve system. The toilet flappers come in two standard sizes that are; 2-inch and 3-inch.

The simple way to check the size of toilet flapper is by examining the flush valve drain opening placed at the bottom of your tank.

Are flapper valves universal?

To avoid confusion, some companies have developed a universal design of toilet flappers so that you can select the ideal one for your toilet.

However, the toilet flapper is categorized by size and frame.

Do toilet flappers wear out?

Yes, when toilet flappers wear out, water drains out into the toilet bowl. This creates a hassle by repeatedly re-filling the water valve tank.

Whereas the fixture remains in a position, but the toilet working system parts do wear out.

How do I know if my toilet flapper is leaking?

The leakage of toilet flapper can easily be identified by checking the flapper or flush valve under the toilet bowl.

To check it more effectively, you can put a few color drops and after 20-25 minutes if the color leaks into the bowl, then there is an abrupt leakage.

How do you stop a toilet flapper from leaking?

To fix the toilet flapper leakage, you should empty the tank by turning off the water valve and holding onto the flush handle.

Adjust the chain-linked with the flush handle and clean the inlet holes to stop the flapper from sticking to the chain.

How do you fix a toilet that won’t stop running?

Toilet overflows when there is a tube problem. So, you should adjust the tube firmly and fill the valve to check the float.

Next, fix the flapper chain by adjusting it with a flapper valve. If it gives a negative result, then change or replace the flapper.

What is the standard toilet flapper size?

The toilet paper is available in two standard sizes; 2-inch and 3-inch.

However, a majority of households use 3-inch flapper whereas, 4-inch flappers are increasingly found in newer toilet systems.

Do toilet flappers come in different sizes?

Yes, they do come in different sizes. Some special toilets have specially customized flappers.

Also, the toilet bowls with greater diameter have different size flapper, and the ones with small diameter have different size flapper.

How much does it cost to replace a toilet flapper?

If a plumber fixes or replaces the flapper, it might cost around $50-$150 as it ultimately depends on the worker’s qualifications and the local rates.

Whereas, if you replace it by yourself, it might cost you around $10 to $25.

Will a running toilet increase the water bill?

The most common reason for high water bills is the overflow of water from the toilets. Continuous running water can consume up to 200 gallons per day.

Some leakages are easy to identify whereas some need to be get checked by the plumbers.

What size toilet flapper do I need?

It depends on the diameter of your toilet bowl. Big diameter requires a 4-inch flapper whereas small diameters require a 3-inch flapper.

How much water can a running toilet use in a month?

The average water leakage per day is around 200 gallons and 6000 gallons per month from one toilet.

Whereas, some leaks are quite noticeable and others make a water sound but can’t be seen due to the water valve system.

Can you just replace the flapper in a toilet?

You can, but it will not necessarily solve the problem every time. If the toilet still runs after replacing the flapper, it means that you have not dealt with the root cause of the issue. It might be that the flush valve seat is in bad shape. To deal with the problem, now you will need a proper replacement of the whole toilet flapper valve, although it’s going to require thorough maintenance and much more time.

How do I know if my toilet flapper is bad?

There are a few hints that’ll tell you that the toilet flapper is not in good condition and needs to be replaced:

Insert some dye tablets into the tank and check if the dye moves to the bowel.

The toilet is continuously running.

It takes a lot of time to fill the toilet.

The toilet flushes on its own

How do you clean the toilet flapper?

Here are the steps you need to follow for this drill:

  • Drain the toilet completely using the water valve until it’s empty
  • For surface grime and dirt, do some scrubbing.
  • Use vinegar and other strong chemicals for any color or stain deposits.
  • Spray disinfectant cleaner in the insides of the toilet
  • Scrub again, harder this time.
  • Clean all the parts separately and then refill the tank

Why won’t the flapper in the toilet close?

If your flapper is getting tough and won’t close properly, it probably means that the lifting chain has extra slack that needs to be removed.

How do you know if the flapper needs to be replaced?

There are certain indications that mean that you need to replace the flapper, which includes leakage from the tank, spontaneous flushing, too much time to fill the tank, etc.

How do you install a universal toilet flapper?

You need to follow these steps:

  • Shut off the water supply
  • Flush the toilet
  • Drain completely and replace the old flapper with a new one
  • Fill the tank again

How do I make my flapper last longer?

If you do proper care and maintenance from time to time and avoid chemical agents as much as you can, the flapper can last much more than the average time.

How often should you change your toilet flapper?

If you are maintaining your flapper properly and taking enough care, it will last almost 4 to 5 years, and then you will need to change it.

What is a flapper in the toilet?

The flapper is the part of the toilet that drains water from the tank.


However, before making your final decision, you must consider whether you are buying an old flapper or a new flapper.

If you are buying an old flapper, try to know the age and materials of it. Though it is not a wise choice to pick any used model.

Know the installation procedure beforehand because you will not like to fidget with your flapper while installing it, check whether the frame is solid or flexible, consider since when have you been using this toilet and see whether the flapper is compatible with your toilet or not.

Last but not the least; don’t forget to check the warranty of the flapper.

(Last Updated On: January 10, 2021)

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