On 11/03/2021 18:40, The Natural Philosopher wrote:
On 11/03/2021 18:22, Tim+ wrote:
The Natural Philosopher wrote:
On 11/03/2021 17:42, Chris B wrote:
On 11/03/2021 15:52, Custos Custodum wrote:
On Thu, 11 Mar 2021 15:00:25 +0000 (GMT), "Dave Plowman (News)"
wrote:

In article ,
Â*Â*Â* Custos Custodum wrote:
Maybe we shouldn't get too fixed on the idea of "dissolving". There
can be no question that ethanol has a detrimental effect on perspex.

I'd be surprised to see Perspex used on a car fuel system. ;-)

My 1963 Mini had a short length of transparent plastic tubing leading
up to the carburettor (not perspex, but I can't remember the details).
Eventually it hardened and fractured.

Was very common on many engines in the 70s (particularly small engines
such as lawn-mowers) it is still sold as fuel pipe.

https://www.ebay.co.uk/itm/201575506495



I remember now. Neoprene

Still not transparent. See eBay link.

Tim


neoprene is transparent

https://www.grainger.com/category/pl...eoprene-tubing


It can be dyed and pigmented of course


I've never come across transparent neoprene. Norprene is a Saint Gobain
trade name, it is not neoprene but its formulation seems to be a trade
secret.

The usual black colour of most neoprene will come from a carbon black
filler. If I had to guess, I'd expect raw neoprene to be a translucent
pale brown, like natural rubber.

The transparent fuel tube is usually PVC. As others have said, loss of
plasticisers leads to hardening. Nylon and silicone are sometimes used
for fuel, they are naturally colourless, but are both translucent rather
than transparent.