Originally Posted by
massplumber2008
Hi Gewjoe:
As Ballengerb1 stated, you have to cut the remaining metal off from the plastic pipe/fitting.
You could use a dremel tool to cut the metal or use a pair of aviation (TIN) snips...see picture.
Then use a repair flange to salvage the old fitting/flange and you should be all set....see picture and click on clam2pdf. Here, this repair flange inserts into the groove around the old flange/pipe and basically makes it like a new flange.
The clamshell flange is usually only found at a local plumbing supply house.
Let us know if need more...
MARK