Synthetic toilet ring/gasket

[MarkHash]

Hi, I found out too late (after the concrete pour) that I shouldn't have run the in-floor heat pex lines next to the toilet riser. Is there a non wax ring I can use that won't deform or melt inside a heated floor?

[TedL]

Yes. Low*s sells ones by, I believe, Fluidmaster. Other places sell comparable. Common item.