2 Packs K-GP1059291 Canister Flush Valve Seal Replacement part by Blue Stars - Exact Fit for Kohler toilets - Replaces 2475620 GP1059291 1049291 - Long-Lasting Rubber - Improves the lifecycle by 50%

Fit perfectly….. easy fix

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.

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

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.

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.