My outside loo has a genuine cast iron high level Thomas T and original Victorian two piece pan.
However, the internals of the Thomas T were replaced with a modern version before I bought the house. And the down pipe is plastic. Looks ok at a casual glance though, and works fine.
The coupling between the down pipe and the pan is a sort of shaped rubber boot, and this has perished and is leaking. Any idea where to get a replacement - or would some form of gunge work as well?