Fernco Available FTS-3 3-Inch Wax Free Toilet Seal, Iron

This item is perfect for my RV Toilet replacement. Because I raised the floor in the RV bathroom due to a repair, this made the toilet installation even easier. The glue on this seal is VERY good. Highly recommend...

This is absolutely the best seal to use on a new toilet installation. I say new toilet because the surface must be clean and dry and getting all of the wax off of an old toilet would be challenging but not impossible with the right cleaning solutions. This product uses a very strong adhesive to seal against the bottom of the toilet, the lower part uses compression rings to seal and extends several inched down into the drain. Properly installed I don't see how these could leak and unlike wax rings their is no sticky mess to deal with. I don't know why these aren't the standard for mounting all new toilets. Excellent product and easy to use.

I very much like tht is flexible enough that alignment isn't critical, in my case a site tip at the closet flange and it still sealed well

Work perfect on my toilet

We'll have to see how well it holds up. It certainly is easier to install than a wax ring. I just put soap directly on the bottom to ease it going in. While I was putting the toilet back, one of the screws fell down and I had to pull the toilet up after being 75% seated. When I pulled it up, the seal pulled off the toilet on one side. I pushed it back on, but in general the glue on the seal doesn't seem too strong. I put everything back together and replaced the toilet. You do have to push the toilet down a little to get the seal down in the drain. Hopefully this pressure will keep the glue against the bottom of the toilet snug to make a water proof seal. I cleaned the bottom of the toilet with Goof Off and alcohol after scraping off the old wax and let it dry before trying to attach the seal to the toilet.