malcolm said:Did you get anywhere? The hole in the bath looks square and impossible to seal even by period craftsmen without the bottom of the seal leaving a big puddle inside the bath. It must surely become a threaded 2 inch pipe on the other side of the bath. The thread size and joint detail of that pipe attachment will be the important thing. Most things are available or can be cobbled together if you know that. I'm guessing a cast iron pipe?
If things can be cleaned up and refitted then DIY sheds supply plastic pipe joints with rubber seals. Just throw the plastic bits away. A round pipe can only have had a round seal.
malcolm said:I'll keep my eyes peeled. I'm sure parts must be available but internet searches seem dominated by people trying to sell replica stuff.