Rockwood Roo 17 Floor Project

Bonefish wrote:
Look up a dealer that handles PVC and ABS pipe and fittings. They would have a collar and threaded connectors that could be used to redesign the connection. They have the cleaner and glue which seals and holds it all together. It looks like ABS pipe.

I would not change the joint. If you ever have to do future plumbing work on this connection, or replacing the tank, if glued it would not come apart. What I did was make a 4" stub of the same size PVC as the drain to temporarily plug the opening, then after replacing the floor, used a can of expanding spray foam insulation(one brand name is Great Stuff-sold at hardware and building supply stores)to seal the gap between the wood floor and the pipe. After the foam had hardened, I used a knife to trim it flush to the floor around the stub pipe, then removed the pipe and the original plumbing drain could be re-installed. The joint is now water tight.