Thanks John.
When i was at secondary school a mates dad worked moulding engine mounts and given that they used to chuck in all sorts
of shapes of rubber into the mould and it all melted together i thought that had to be some way above 180c
These days another mate works at Pendle Polymers near me and they mould a lot rubber bellows and other stuff
and buy their rubber in various sized beads.
He got me a small steering rack bellow which i hit with the hot air paint stripping gun and modified it for my Lathe
feed lever.
It took some heating even with the gun to re- mould its shape at the base.
So i `m not gonna worry.