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Jan Kirshin
Reviewed in Canada on February 2, 2025
Perfect. As expected.
Big Dog
Reviewed in the United States on September 10, 2024
It has to be compressed and twisted. I oiled it and compressed plastic piece with a softball. Thanks youtube.
physh
Reviewed in the United States on October 30, 2024
It feels like the most midlife thing to do: a review for a toilet tank gasket!Anyway, I have a Santa Rosa one-piece toilet and the gasket was disintegrating from using cleaners in the tank itself (bad idea). This gasket fits if you put it in hot water for 5 minutes before installing it. Needs a good bit of strength for the flange to clip back onto the bottom of the tank but it works.Sure beats calling a plumber for $150!
gb
Reviewed in the United States on April 15, 2024
I had a 20 year old gasket that leaked, so I both one of these replacement gaskets and used olive oil as a lubricant when I installed it. It leaked within a few months. the instructions say to not use lubricant, but that would be tough. So, this time, I use a waterproof silicone lubricant from Ace hardware, and it made the installation "doable". No leaks so far.
Carson
Reviewed in the United States on August 20, 2023
I have theee Koehler toilets and the large black rubber seals have deteriorated over the years. Now you would expect that Lowe’s or Home Depot would carry these, but they don’t. They can be ordered but shipping times was not reasonable. Amazon had them in stock and they arrived quickly. These are genuine Koehler seals and are exact replacement parts. Easy (though messy due to the deterioration of the installed old seals) replacement. Recommended Amazon and these seals.
Duck05
Reviewed in the United States on March 28, 2023
My flush valve had failed (broken securing feet) and I needed a whole replacement kit. The kit includes the flush tube, flapper, and this gasket. Now if you didn’t know better, the original gasket overtime flattens out and is much larger (diameter) when removed; this will lead one to believe you need a larger gasket to replace an old one. So, seeing the larger dimensions I bought this separately (so now I have a spare).Also, the new gasket is thicker and it takes some skill/knowledge to install a new kit with a new gasket.One user depicts squishing the new gasket before installing; another suggested (which I used) submerging the gasket in extremely hot water before installing. That worked very well and despite the previous attempts (several times for 15-30 minutes), the heated gasket install in seconds and formed a proper seal.
Ken
Reviewed in Canada on December 10, 2023
Replaced previous gasket. Suggest smear lower side of gasket with olive oil when placing plastic column onto it and pressing down on column to lock column into place on bottom of tank.
Jeffrey
Reviewed in Canada on November 13, 2023
The gasket arrived as ordered, fit perfectly and was easy to install.
PGFlyer
Reviewed in the United States on January 19, 2023
My Kohler, Santa Rosa, one piece after more than 12 years needed a complete overhaul including the tank gasket.I read and tried a couple ideas on how to get this done but ended up with my own solution. Easy peezy once I figured it out.Prepare the gasket as shown in the pic. Compress evenly to at least half its depth with wood blocks and "C" clamps.Then into the freezer for about 3 hours. Have all components of tank ready for install then remove gasket from the assembly. Olive oil on both upper and lower surfaces will give you extra time for finite adjustments. You'll have about 3 or 4 minutes before the seal expands enough to make basic install more of a challenge. Install flat side down. Slips right into the tank with no effort. Align as necessary to be square with rear of tank then install all other tank components. By this time the gasket will have tightened substantially but with effort a little adjustment can be made if required. For me, in another 30 minutes or so the gasket swelled to a tight seal with no leaks.Some warm water into the tank could speed the process.Good luck!! It really was very easy with this procedure.
Akiraro
Reviewed in Canada on April 22, 2023
I changed the flapper first but the problem was still there so I decided to change the gasket as well. 15 minutes it's all it takes to change the gasket. Oil (olive) the gasket on both side and use a tennis ball to help push and turn at the same time. No more water leaking.
Big10Rog
Reviewed in the United States on June 24, 2022
I have the Sana Rosa toilet and bumped the old set-up while installing a new fill valve. I could not make the old one reseat properly. This seal has an OD of 4" and about a 2.5" ID. My old one had an OD of 5" and a 3.25" ID. I figured there is no way this is the correct seal. I called Kohler again, and the gal I talked to this time was very knowledgeable about this set up, and assured me this will work. I put it hot soapy water like they said for 15 minutes and slipped it on. Worked like a charm. Apparently the old seal swelled with age.
Jing Ma
Reviewed in Canada on May 18, 2021
I followed the comments and watched a few Youtubes but still found difficult for the first one. I applied oil on both sides and tried about 30 mins and no luck. then I changed the hands position and it was done in a second. My second one is much faster - took less than 2 mins ( most time to let water out). The key is to apply some oil/lubricant and also practice the position to hold .
Chris
Reviewed in the United States on April 13, 2018
Well, I needed to let some time pass before writing my review on this product. The reason for this is not due to the gasket itself, but to how difficult it was to install it and how frustrated it left me. The gasket is pretty thick in order to create a tight seal. The existing gasket on my toilet needed replacing, so I thought this would be simple. Unfortunately, my tank is very narrow and I could not get any leverage to push the Flush Valve back onto it and get the teeth of the valve to hook under the tank. I tried for a few days, coming back after frustration levels died down, only to fail again and again. I then resorted to calling a plumber thinking for sure that he could get this in with some wisdom gained from years of experience. Alas, I left him alone in the bathroom for 30 minutes while he tried and tried to get this in there to no avail. Being a plumber who is also a problem solver, he went out to his van, took some PVC pipe, a Dremel device, a drill and four screws and created a device whose sole purpose will be to replace these gaskets. See picture for the device he made. This device allows you to easily push down on the flush valve and gasket, then turn it while keeping sufficient pressure. The plumber was worth every dollar to finally get our toilet working in our master bathroom again.In summary, the gasket works just great, but the installation is beyond difficult.
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