There is an o-ring recessed in the end of each ABS pipe too. I have some ABS glue on hand, but wanted to check before deploying it. Something doesn't seem right with that approach. Thanks all!
Jor - my top vents and inlets went back in without damage. Did you reattach the waste pipes at the base without sealer as well?
Anything permanent is a bad idea, and I deal with the "soft stuff" by not thinking about it and cleaning it off the pipes. You should be able to clean it all up, install new o-rings,...
What the heck is that?