What is the correct wax seal for a toilet flange that is flush with the floor?

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Try Ultra seal: plumb-bob.com

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I usually use the thickest wax ring I can find with the plastic funnel thing embedded in it. If it's a little too thick, the extra wax will just squeese out a bit underneath the toilet. Sometimes its necesary to double up on the ring (use two - one with the funnel one without) to make a good seal on a flange after installing a thick (tile) floor in a bathroom which I kind of assume is your issue.

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If the closet collar is even with the top of the finished floor, no amount of wax will stop the water from coming out. It may not happen right away, but it sure will. One way to fix this problem is to attempt to raise the closet collar so that it will rest on top of the finished floor. Another way is to buy a closet collar extension. Either way the toilet will be held to the floor and the wax ring should then seal tight.

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It depends... The advice above is good however if you have one of the newer "Super Toilets" such as the Toto Drake or Am Std Champion the outlet hole on these are enlarged and you should not use the wax rings that come with the plastic horn. The plastic horn will actually get pinched by the larger outlet and be squeezed into an oval shape that will actually cause clogs.

First answer by anonymous. Last edit by Redwood. Contributor trust: 170 [recommend contributor]. Question popularity: 305 [recommend question]