fiat shower pans..plastic or concrete???
that is a moulded stone--plastic pan with a
compressed SS falnge inserted into the plastic???
this is not a concrete terraza base, correct??/
are you sure it is the actual metal flange that is leaking
and not the pvc pipe??
if that is the case you are in trouble....
their is probably no way to get the old shower insert
out....without hacking up the shower base in the process...
where or how is this leaking anyway???
has the flange itself rust out??
Now, if you can gain access from underneath,
you could probably go out and buy a couple tubes of 100% silicone
and put a good patch on the leak...
get the area totally 100% dry first and then plaster on the silicone
it would probably last 15 years