I needed a piece of pipe to run from my petrol tank breather pipe up to the filler tube, it's about 10" long and I had a perfect piece, great I thought, that will do. I had read on here somewhere that you should check by immersing a piece of the pipe in fuel for 24 hours to see if it will be ok, so I cut a piece off and soaked it overnight.
The next morning, after just 7 or 8 hours this was the effect..... the pipe had swollen to about twice its previous size and I guess it would be destroyed in just a few more
So, be warned, don't be tempted!!
Regards
Steve

