Help with toilet flange

[diegoa1997]

During demo this toilet flange was destroyed.

It is not a thread on, it doesn't even appear to be a glue on, it seems like it comes straight out of the black tank like if it was all one piece.

This is on a Damon Challenger 2004.

Only fix I see is to put a flange inside but this will reduce the inner diameter of the pipe.

Anybody had a case like this? When I search online they all appear to be tread on or they have a cracked flange they can put a new support on.

Any advice will be appreciated.

 

[Holdmybeer]

It's not likely to be one piece. If you're staying with an RV toilet, a conventional residential type closet flange won't work, so just dropping a new flange over the existing flange may not work out. Unfortunately, if you can't unthread it, you are likely going to have to cut that one out and replace it with an RV type flange with a foam gasket.