Simple Solutions

Toilet Tank Gasket

By: Joe Truini

A toilet tank lid that doesn’t fit properly is dangerous if it falls off the tank, and the noise of china scraping china is truly annoying. To solve this problem simply apply a bead of 100% silicone caulk to the top lip of the toilet tank and allow it to dry (usually overnight). Once dry, the silicone forms a gasket that keeps the lid from sliding around and eliminates that nasty grating sound.


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7 Comments on “Toilet Tank Gasket”

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  • Henry Butler Says:
    February 8th, 2017 at 2:20 pm

    This solution was offered to me as a possible cure for a warped toiled tank lid, but my immediate concern was that the silicone would seal the lid and it would be very difficult to remove. Searching chat boards I found that some manufacturers now silicone seal the lids themselves and consumers are having a terrible time removing the lid when they need to. I would think weatherstripping or a regular gasket material of some kind would be a better solution that sealing the lid down tight with caulk.

  • BB Says:
    April 24th, 2016 at 5:19 pm

    OMG I cant wait to try this, this toilet lid has been driving me crazy for year EVERY time I sit it slides and makes noise. THANK YOU!!!!

  • Official Comment:

    Ben Erickson Says:
    March 9th, 2009 at 8:03 am

    Hi Rich,
    It appears that the wax ring that seals the toilet to the floor flange is leaking and needs to be replaced. Check out our article on How to Remove and Replace a Toilet to see the process that is involved.

  • Rich Ulibarri Says:
    March 7th, 2009 at 11:04 am

    My toilet is leaking from the bottom, at the floor. There is no water leaking down from anywhere. It is coming from around the bottom and has loosened the caulking seal. Is it possible there is a gasket or a seal that has been broken? I’m a do it myself person and believe I can fix it, if I know what the problem is. Help?? Thanks. Rich

  • John Watts Says:
    February 16th, 2008 at 10:43 pm

    One thing to make this just a little bit better. After applying the silicon, add a piece of Handy Wrap or something simular across the top of the tank. Then place the lid on top of that. Let set for about 24 hours. Remove top and then the plastic wrap. Now replace top on tank. This makes a perfect gasket.

  • Hope Anderson Says:
    June 4th, 2007 at 10:06 am

    The tip on making the tolit lid quiet was very interesting. Thank you very much. This will be very helpful!

  • [email protected] Says:
    April 16th, 2007 at 8:46 am

    I would like to replace my 10″ with a 12″, is it possible to do so?

    Thank you.


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Toilet Tank Gasket