Top 10 Best toilet flush valves in 2026

Last Updated - 6/30/2026

🏆Best Choice

Mansfield

Mansfield Plumbing 630-0030 Flush Valve Seal Gasket for 210/211 - 3 PACK

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•Genuine Mansfield Seal - 3-Pack - Includes three original Mansfield 630-0030 flush valve seals. Fits 210 and 211 tower-style flush valves (also compatible with Model 160 tanks that use the 211 valve).
•Authentic Mansfield Packaging – Genuine Mansfield parts come bundled and sealed in official Mansfield-branded packaging. If the product arrives loose or unsealed, it is not an authentic Mansfield part.
•Perfect Fit - The only red seal specifically designed for Mansfield tower flush valves and ridged-style flappers. Measures approximately 3-1/2" outer diameter and 2-1/4" inner diameter for a secure, leak-free seal.
•Fix Common Toilet Issues – Replaces worn seals that cause leaks or hard-to-flush toilets. Old seals may develop a ridge or cone shape over time.
•Long-Lasting Material - Made from a proprietary compound that outlasts silicone and generic alternatives.
•Easy Installation - Step-by-step installation instructions are included on back of package.

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$12.01

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Hidnvefen

2Pcs Canister Flush Valve Seal for Kohler, Toilet Tank Parts GP1059291 Flush Valve Seal, Silicone Gasket Replacement Parts Toilet Seal Ring

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•[Solving Your Kohler Toilet Flush Valve Leak] This canister flush valve seal can prevent or stop leaks, to restore your toilet's quiet operation, improve flush pressure, and avoid those high monthly water bills with our Kohler toilet parts.
•[Quick and Easy Installation] Quick and effortless to repair your Kohler toilet leaking problems. No plumbing pro skills required and no need to remove the toilet base, it takes just a few minutes to install and restore your toilet's tranquility.
•Toilet Flush Valve Replacement Kit - Perfect replacement for Kohler K-GP1059291 canister flush valve seal (red or yellow color). Compatible with K-4436 parts. This toilet ring seal fits most toilets with a 3. 3/8" gasket diameter, a great way to fix issues caused by worn or damaged seals.
•[Premium Silicone Material] The toilet flush valve seal is crafted from high-quality silicone material, offering better resistance to chlorine and other chemicals in the water compared to regular rubber seals, last 10X longer than standard material.
•[Installation Video for Toilet Seal] If you're unsure how to replace this toilet seal component or there are any problems with this flush valve seal, contact us through Amazon for an installation video. We'll respond within 0.5 to 6 hours upon receiving your message.

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$7.39

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Mansfield

Mansfield Plumbing 0030 Flush Valve Service Pack, Fits 210/211 Flush Valve

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•This product adds a great value
•Product is highly durable and very easy to use
•This product is manufactured China
•Returns will not be honored on this closeout item
•Returns will not be honored on this closeout item
•Returns will not be honored on this closeout item
•Returns will not be honored on this closeout item

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$6.99

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Essential Values

Compatible Kohler Flush Valve Seal - 3 Pack Toilet Ring Seal GP1059291 - Flushing Gasket by Essential Values

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•Compatible 6 Pack Kohler Flush Valve – Great value 6-pack flush valve seals compatible with Kohler K-GP1059291. Offered at a fraction of the store price. Choose Essential Values for high-quality, compatible Kohler toilet replacement parts.
•Easy Installation – Outside diameter: 3 3/8", Inside diameter: 2.75". Our compatible Kohler flush valve kit is a direct replacement for worn or cracked original seals. Installation takes just minutes, with full fitting instructions available in the photos.
•Smarter Design – Unlike other brands, our gasket design includes an improved lip for easier removal and replacement of the seal in the future. Save time and money without compromising on quality.
•Bring Back Your Flush Power – A poorly flushing toilet can be problematic and embarrassing, especially with guests. We include a set of 6 compatible Kohler flush seal gaskets in each pack. Save money and protect your toilet for future use.
•GP1059291 Replacement Part – Suitable for Kohler toilets with a flush valve seal and compatible with other comparable brands. Dimensions are based on an outside diameter of 3 3/8”. This is an aftermarket replacement by Essential Values.

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$8.99

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CTEAKOP

CTEAKOP 2 Pcs Black Toilet Fill Valve Seal Replacement Part, Rubber Toilet Parts Inside Tank Kit, Flush Valve Seal for Fluidmaster 200, 747 and 400 Models Toilet Fill Valve

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•Universal Design: The rubber flush valve seal is fit for Fluidmaster 747, 200, 400 models. You can fix broken toilet valve seal without buying new fill valve
•Reliable Material: The toilet tank seal is crafted with high-quality rubber, which can insure the sturdiness, sealing and has a long service time
•Easy Installation: The installation of the flush valve seal is very convenient. Even if you have no installation experience, you can install it easily. You just need to remove the broken and old toilet inlet valve seal and install the new seal
•Multiple Function: The toilet parts inside tank kit can improve the efficiency and reliability of the toilet system, make sure each flush goes smoothly. It can also resolve the problems of noise and water leakage
•Package Contains: You will get 2 pcs toilet fill valve seals. The sufficient quantity can meet your needs of use

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$6.90

$7.68

-10%

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Hidnvefen

3Pcs Canister Flush Valve Seal for Kohler, Toilet Tank Parts GP1059291 Flush Valve Seal, Silicone Gasket Replacement Parts Toilet Seal Ring

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•[Solving Your Kohler Toilet Flush Valve Leak] This canister flush valve seal can prevent or stop leaks, to restore your toilet's quiet operation, improve flush pressure, and avoid those high monthly water bills with our Kohler toilet parts.
•[Quick and Easy Installation] Quick and effortless to repair your Kohler toilet leaking problems. No plumbing pro skills required and no need to remove the toilet base, it takes just a few minutes to install and restore your toilet's tranquility.
•Toilet Flush Valve Replacement Kit - Perfect replacement for Kohler K-GP1059291 canister flush valve seal (red or yellow color). Compatible with K-4436 parts. This toilet ring seal fits most toilets with a 3. 3/8" gasket diameter, a great way to fix issues caused by worn or damaged seals.
•[Premium Silicone Material] The toilet flush valve seal is crafted from high-quality silicone material, offering better resistance to chlorine and other chemicals in the water compared to regular rubber seals, last 10X longer than standard material.
•[Installation Video for Toilet Seal] If you're unsure how to replace this toilet seal component or there are any problems with this flush valve seal, contact us through Amazon for an installation video. We'll respond within 0.5 to 6 hours upon receiving your message.

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$8.56

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IMPRESA

Impresa Replacement Canister Flush Valve Seal & Toilet Ring Seal - 2-Pack Blue Rubber - Compatible with American Standard Champion 4 & Eljer 4 - Fits 7301111-0070A

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•Toilet Flush Valve - No more leaks or issues with your toilet; our canister replacement seal is made to work perfectly with American Standard Flush Valve Kit 7301111-0070A, gasket, and O-ring repair kit for Champion 4 tank
•Improved Flushing Performance - Our dual flush valve replacement kit can improve the toilet's flushing power and overall function preventing weak flushes and poor performance caused by a clogged or worn-out toilet fill valve
•Compatible with Multiple Brands - Designed for most American Standard Champion 4 and Eljer 4 model toilets, this toilet flusher replacement kit, and O-ring set also fits most toilets with a 4.25" gasket diameter
•5-Minute Install - Have your toilet running smoothly without any hassle with our toilet valve replacement kit; simpler to install and does not require removing the base of the toilet, ensuring your toilet performs as it should with minimal effort
•Simple Home Solutions - Impresa is all about making home improvements easy, and our toilet repair kit is no exception; designed to make fixing leaks and weak flushes in your toilet easy and cost-effective

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$7.99

$9.99

-20%

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Jwodo

5 Packs Toilet Flush Valve Seal Ring, Replacement Part Number 816.418.00.1, Silicone Rubber Toilet Flush Valve Seal Washer Compatible with Geberit Flush Valves Base Sealing Washer

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•PACKAGE CONTENT - Each set contains 5 packs of 2-inch toilet flush valve seal rings, model number 816.418.00.1, ensuring an ample quantity to meet your needs and replacements.
•SIZE AND COMPATIBILITY - Constructed from silicone rubber, the flush valve seal ring offers high strength and durability, with dimensions of 1.3 inches inner diameter (I.D.), 2.48 inches outer diameter (O.D.), and 0.1-inch thickness. These silicone seal rings are meticulously designed to be compatible with Geberit flush valves (NOT UNIVERSAL), guaranteeing a precise fit for optimal performance.
•EASY INSTALLATION AND REPLACEMENT - These seal washers feature a straightforward installation process that requires no professional tools, allowing for easy replacement to address water leakage issues and eliminating the need for costly plumber services. Repairing this flush valve seal takes only a few minutes, saving both time and money.
•WATER-SAVING AND EFFICIENCY - Replace old, leaky, and inefficient toilet flappers to minimize costly water waste. These seal washers effectively seal the flush valves, preventing water leakage and supporting water conservation initiatives. By improving the efficiency of toilet flushing systems, they contribute to overall water conservation efforts.
•SILICONE RUBBER WASHERS - Crafted from durable silicone, these seal washers are resistant to aging, eco-friendly, and non-toxic, offering a dependable solution to prevent water leakage in toilets. In most cases, if there's an issue with a flush valve, it's likely due to a problem with the valve seal (soft rubber washer) rather than the flush valve itself or the toilet fill valve. Therefore, simply replacing this valve seal can enhance toilet flush efficiency.

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$9.99

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Acogedor

Urinal Flush Valve, Zinc Alloy Bath Toilet Urinal Flush Valve, Manual Delay Automatic Shutoff, Urinal Chrome Supply Exposed Fittings Flusher Valve

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•?Product Description?This toilet urinal flush valve set is made of solid copper with with chrome finishing, rust resistant, always looks like a new one. It is a hand push type, which will save water greatly. Fashionable and exquisite design, it will perfectly match your bathroom.
•?Hand Push Type?Convenient to use, flexible, saving water greatly, environmental protection. Solid zinc alloy construction with chrome finishing, rust resistant, always looks like a new one.
•?Scenes to Be Used?Applicable for washing basin and sink. Fashionable and exquisite design, perfectly match your bathroom.
•?Configuration?ABS hand wheel, aluminum alloy inner core, iron inner rod, stainless steel screw, stainless steel spring, copper lining.1/2 inch outlet connection, easy to install with some installation parts included.
•?Specification?Main Material: Zinc Alloy; Suitable Water Pressure: 0.8 (Mpa); Flush Time: 3-10s

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$15.52

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Cutetool

Cutetool (2pcs) 9BU001ER Toilet Flush Valve Silicone Seal Gasket Compatible with TOTO THU128 Flush Flapper Valve Gasket,Toilet Tank 3-inch Flush Valves Gasket Replacement

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•Application：The 9BU001ER toilet flush valve seal gasket is suitable for TOTO G-Max Series THU128 All-in-One 3" Flush Valve Assembly seal gaskets replacement. It helps solve the problems of water tank leakage and weak flushing, and improves the overall flushing performance
•Compatible Models: This flush valve gasket is compatible with TOTO toilets including CST744SD, CST744SDB, CST744SLDB, CST744E, CST743S, CST743SD, and CST743SDB models
•Durable Material：THU128 flush valve silicone gaskets is made of quality silicone with elasticity, water resistance, abrasion resistance, and corrosion resistance. Suitable for humid environments
•Fits 3-Inch Flush Valves：ID approx. 1.38 inches (35 mm), OD approx. 3.54 inches (90 mm), thickness approx. 1/8 inch (3 mm). Please confirm the old toilet silicone seal gaskets dimensions before purchase
•Leak Prevention:Before replacing the flush valve Seal, turn off the toilet’s water supply. Press the flush button to drain the tank, then replace the old toilet silicone seal gaskets

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$9.99

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