Fluidmaster 5403 Universal 3-Inch Toilet Flapper, Water Saving | Silicone seal lasts up to 10X longer, Adjustable dial saves water, Kink-free chain, Resists chlorine and hard water

11/10 customer service. I bought a Fluidmaster 5403 3-Inch flapper in November 2021. In March 2026 4 1/2 years later it had developed a small blister on its O-ring and would not seal correctly. Typical wear I assumed. As I was ordering another one I saw it had a ten year warranty. After ordering the new one I went to the Fluidmaster web page and found the warranty information. I filled in and sent the warranty form and 45 minutes later I got an email with a FedEx tracking number saying a replacement part was on its way. The new part got here in 3 days. This flapper fits perfectly - took on a minute to install - and works great. Not only is this a great part that does the job the customer services was bonkers good. From now own Fluidmaster will be used for all my toilet needs. The people at Fluidmaster shall sit amongst the chosen.

I bought this because a couple of toilets were constantly running, and this fixed the problem immediately. Installation was pretty simple, just a few adjustments and it was done. Pros: • solved running toilet issue • straightforward installation • good seal once installed • has held up well for a couple of months • 10-year warranty adds peace of mind • great value for money pack • great replacemnt Cons: • no major negatives so far This ended up being a simple but very effective fix. No issues since installing it.

These work well in high chlorine toilets. They are easy to install and offer and adjustable feature to control to amount of flushed water. I used them to replace the original flappers in my Kohler toilets. Replacement is easy and straightforward. They stopped the slow leak I had in my toilet bowls.

This was not universal in terms of latching. I’m. Ot sure if that was my fault, so I’ll settle on saying it seems like it will work great if you know how to use it and just know toilets apparently vary in stupid ways. So double check. Honestly I think this taught be it was not the flapper causing the running, but it was a solid try from an uninformed person taking the term universal as I think we generally would. I didn’t even know there was a difference in the flapper connection vs the size of the plug. That I really thought was universal. I accept my failure and momentary defeat lol Not going to return this, because it works fine and seems great quality. I only give 4 stars due to the marketing of universal not seemingly being 100 percent accurate and that was why I ordered a more expensive version of other cheaper ones.

After just a few days use, i am compelled to write a review on this product. 1. It is well made and look and feels high quality 2. The detented adjustments allow a wide array fitment, and the detent positions hold very well 3. The flapper is adjustable for the length of time the flapper stays open.. which is nice 4. Easy installation... almost too easy Now... the primary reason for my review is the following 5. The longest "flap open" setting of 10, leaves about 3 nches of water in the bowl, which made me concerned.. as this was the longest the flap could stay up ( 10 was Max) BUT 6. I watched the actual bowl flush and it was a complete, full length flush.. 7. I confirmed this by leaving the tank cover off for three days, and the tank would have about 3 inches of water BUT still allowed a complete flush This is a real water saver, as the flapper it replaced would drain down to about an inch.. I was concerned that the flapper was closing too quickly to allow a full flush BUT it does allow a full flush Great product

The Fluidmaster 5403 3-Inch Toilet Flapper works excellent. Easy to install and fixed my leaking toilet.

Installation was simple and it worked great initially. After about a year, the hook tends to loosen and fall out of the pole it attaches to, which can prevent the flap from closing properly. This happened on all my bathrooms around the same time, so be aware it might not last long-term.

What a great product. The photos explain why you should buy this one. I've also added replacement tips: The first photo shows 3 distinct advantages. 1) a durable silicone rubber seal. The body of the flapper is rigid, durable plastic that maintains the structural integrity of the flapper, but the seal is an advanced, separate, and flexible material that will make an effective leak-proof seal. 2) The width of the hinge is adjustable to fit the posts, which vary by brand, so that the alignment of the flapper is maintained. 3) The volume of the flush is adjustable to conserve water if you choose. 10 settings let you balance water usage and effectiveness. Even the clip that attaches the chain to the flush lever is improved over the traditional dumb clip. The simple addition of an internal barb both secures the clip and keeps it aligned. A table of settings by brand shows the proper volume setting and chain length. The brand of my toilet (Crane) was not listed, so I just set the length to be the same as the previous Toto flapper. Tip: if you have a conventional (non-quarter turn) shut-off valve, don't forget to loosen the packing nut when shutting off the supply, and smugging it up afterwards. It may leak briefly when opening and closing the valve, but failure to adjust the packing may eventually result in a leaky valve. Photo 7 shows the amount of water that was wasted after the complete failure of the Toto flapper before I heard the water leaking. I have a Moen Flo meter on my household water supply. It misclassified the continuous leak as 264 gallons of hose usage; therefore, it did not notify me of the leak. Even though the Flo meter used AI to classify water usage, it did not notify me because of the misclassification. This makes me wonder if, in the event of a washer hose break, it would not detect it.

Muy bueno, quedo a la medida

Works well, although do wish I could find just the gasket as thats the part the is the issue after awhile

Recomendable.

Seems to be of good quality.so far so good.

Good to have for emergencies