I need to replace my kitchen garbage diposal and I am having a problem removing the old sink flange. It is stuck fast to the sink. I don't know what was used when it was installed, but it sure isn't acting like "non-hardening plumber's putty", more like super glue.

I have tried to loosen it by placing a piece of wood over the under side of the flange and hitting it with a hammer. It did not budge. I tried to see if I could get a chisel tip between the flange and the sink but I was concerned that I might chip the sink. I also tried to mount the backup ring of the new disposal over the old sink flange but it is of a different design and would not fit.

Any suggestions would be appreciated. I don't want to repace the sink but I am giving it some thought. I am sur you understand the need for a quick answer, I can not leave the kitchen in its current condition for very long.

Thank you

Replacing Garbage Disposal & Sink Flange