I was able to remove all the lead and okum from the cast iron "y" that is cemented into the garage floor. Now I need to temporarily install a 3" ABS pipe into the hub. Do you plumbing pros know if a Fernco donut or a Tyler Seal gasket will do the trick? I am going to install all new cast iron hub and spigot pipes and fittings later. I will install a new toilet flange, sanitary tee, 90 degree elbow, and about 15' of cast iron pipe with hub and spigot. I already checked pricing and know that it will not be cheap.