Review on 5-Pack of Kohler-Compatible Canister Flush Valve Seal Replacements (Equivalent to K-GP1059291) - Ideal Replacement Parts for GP1049291 Tank Canister Gasket Kit - By IMPRESA by Matt Louis

Since in our case Kohler canister flush seals last less than a year and 3 years on the other, I decided to have several spare parts at home and the price for an item with five seals was $15 plus and a replacement kohler was $7 plus, it was a breeze for me. Wasting water just in the spare bathroom was discouraging. As a retired mechanical engineer, I'm amazed that this design exists, especially from a company I've been using for years (used to do all kinds of dampers). We built 9 houses and this is the worst toilet design and experience. Unfortunately this is our last home. Don't waste money upgrading to a valve design or replacing American standard toilets. I have also turned off the water in spares when not in use as I cannot trust this design. Hardness and impurities in the water determine the service life of the seal. Replacing a new seal takes about five minutes. Tip: If the seal is about to fail, you'll find that you need a little more pressure to use the purge valve, or that it takes longer to fill the tank before closing it.