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Old 08-27-2010, 09:07 PM   #1
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rubber gasket question

Hey Everyone,

I had to replace my toilet tank and today it arrived. I put the tank on, the tank is still a bit wobbly. I hesitate to tighten the tank anymore because that is what got me into trouble last time (I cracked the tank).

Does the rubber gasket take time to settle? I ask because the new tank seems to leak water from that area and then drip its way down the attachment screws.

And, would adding silicone to the various parts help keep it sturdy?

Thanks in advance for any help,


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Old 08-27-2010, 10:20 PM   #2
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They will always feel somewhat wobbly. The foam gasket should fit snug around the big round plastic nut in the bottom center of your tank, covering the nut in its entirety, and fitting flush with the bottom of the tank. You should also have rubber washers for the big brass bolts that hold the tank to the bowl. Those will go on the inside of the tank. Brass washers will go on the bolts under the tank and below the bowl, followed by plastic wing nut, THEN the brass nut (last).

Compress the tank by hand (or have someone hold it down for you) then while holding the bolts inside the tank with a large flat head screwdriver, tighten the plastic wing nuts as tight as you can by hand. I usually use about a 5/8" deep socket also by hand (not attached to ratchet) to help turn the wing nut. Watch the level of the tank up front at the back of the bowl and cinch it down just tight enough so it's even on both sides, but shouldn't be touching the bowl. Probably an 1/8" gap.

Should be good to go... literally


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Old 08-27-2010, 10:47 PM   #3
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Nope its not tight enough. Most good toilets will tighten up so the tank touches the bowl, some will come with rubber pieces that sit in between to cushion it a bit. Rather than using just a wrench, push down on the tank to compress the neoprene, then tighten the nut. Doing this you shouldn't have to turn the nut more than a turn or two afterwards to snug the tank and bowl together.
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Old 08-28-2010, 08:12 AM   #4
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Thanks for the tips! I am off to give it another go.

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