Flange gasket

[Winger27]

I have a on top of tile toilet flange, I bought a SaniSeal, it is to thick. The toilet will not compress it enough to rest on the floor. Why is this? I am using a standard pvc/metal flange. I am looking to go waxless what are my options. Thanks

 

[Reach4]

That's sad. Did you try both orientations?

https://content.interlinebrands.com/product/document/16/126222_Installation.pdf

Korky and Fluidmaster waxless offerings have you use or omit parts, depending on the thickness needed.