Fuel Sight Gauge Tubing

[Roger Sheridan <rogersheridan@btinternet.com>]

I had been planning to use polyurethane tubing for this, but the sample
piece I just removed from my fuel can is badly discoloured and slightly
expanded after 2 months exposure to auto fuel - not ideal.

Has anybody identified a material that does not degrade in this way?

Thanks for any feedback.

Rog Sheridan.