[2026 Upgraded] BlueStars 2-Pack K-GP1059291 Canister Flush Valve Seal For Kohler Toilets – Replaces 2475620 GP1059291 1049291 – Silicone Seal Gasket – Leak-Proof, Long-Lasting Performance

These fit the Kohler Flush Valve perfectly and are easy to install. We have a summer place and I had to fix all three toilets by replacing these seals after they had sat in high chlorine water for 6 months. They work great.

I had a leak from my Kohler tank that was getting pretty bad and potentially showing up on my waterbill. The tank refill was turning on every 10 min.This O-ring did exactly what I had hoped and the leak is completely gone. I found a YouTube video on how to temporarily disassemble the flush device and swap the O-ring seal. Easy DIY for 5-10 min.

Fit perfectly….. easy fix

The seals seem to be softer and higher quality.I hate the new Kohler design. But these have stopped the toilet from running. So far.

The rings fit the cannister perfectly and were easy to install. The original rings were 6 years old, had deteriorated and caused slow tank leaks in two of our Kohler toilets. Of course, this results in intermittent refilling of the water tanks. The rings worked fine for a few days, then I heard one toilet refill and heard the other toilet refilling a few days later. Both toilets continued to refill intermittently. So I spent the extra money for original Kohler replacement rings. Problem solved; no further leaks. Before installing, I compared the rings. The surfaces of the Kohler rings are completely smooth whereas the Blue Star replacement rings have subtle ridges that can be seen and felt. It is these ridges that I believe prevent the formation of a water tight seal and why they don't work.

My brand new Koehler toilet was leaking water into the tank. I went to YouTube University to see what the problem was. Ordered this product and it arrived the next day. It took about 5 minutes or less to replace the old one. No more running water/leaking toilet.

These parts work great on our new toilets and less expensive then buying in stores.

The canister seal fit perfectly and solved my toilet leak. No instructions came with them, but it was easy to find directions on line.

Purchased these for my 3 Kohler toilets because they had 4.5 stars. These have an outer diameter of 3 3/8" but the Kohler GP1059291 that the manufacturer of this product claims these are a direct replacement for, are 3 1/2" That 1/8" makes the difference between these sealing and not sealing. These also have some kind of ridged texture on their surface that may be adding to their leaking. I tossed these and ordered from Home Depot and just bought the Genuine Kohler GP1059291 instead.All 3 toilets work great now....no more late AM leaking....buying the genuine Kohler gaskets from Home Depot was well worth the money......lesson learnt. This is my sole opinion on the gaskets.

I bought this more expensive option hoping I would get good quality rubber because it shipped from California (maybe made in USA), but no; Made in China. One toilet holds water well while the other leaks a little. I verified the condition of the valve seal mating surfaces and there is no distortion or anomalies. You would get the same stuff picking a cheaper option, and probably a multi-pack rather than just the two I ordered.