I need to remove the existing PVC to cast iron adapter in the main waste outlet of my basement. Another PVC fitting will be added in place.
This is a 4" cast iron with a rubber ring that seals between the PCV and the iron.
Here's what I've done:
PVC pipe will rotate freely in the rubber.
PVC pipe will deflect left/right up/down a few degrees without much force.
Added some soap as lubrication. This made the above 2 things a bit easier.
Pulling outwards: it won't move at all, even while pulling and rotating/wiggling at once.
I had imagined that this was a straight pipe passing through a rubber "donut" but after what I've tried so far, I'm not sure. It feels like something solid is preventing it from pulling out.
I could cut the PVC apart as I don't need to reuse it. But I don't want to damage anything inadvertently (especially the cast iron) and would rather do it right if that is possible.
Thanks for any advice!