silicone tube

Google silicone tubing. Plenty of sources. Don't worry about the FDA certification.

Cheers

Check your local homebrewing and aquarium shops. Or ask a friend who works in a research lab very nicely :)

Thank you for your most helpful suggestions!
Regards,
John

Hobby shops that sell gas powered R/C cars have it as well. GL!

DM

Anyplace which sells aquarium supplies should have silicone air tubing. I think it's typically 1/4".

Amazon has 1/4" in medical grade. Free shipping for Prime members.

I use McMaster-Carr at mcmaster.com for tubing. I've replaced a bunch from reservoirs and the Hiker that I've had for eight years. I also got some to rebuild a GSI moka-pot when the brass tube broke.

Silicon tubing provide the flexibility, durability & also chemical & temperature resistant. Its also used in wide varieties of industry..

pipe plugs

US Plastics has a lot of nice supplies and reasonable prices for small sized items (their larger tanks tend to be more expensive than necessary). [EDIT] Didn't realize you'd already checked here, but I found some for you anyway ;)

Here's their FDA approved silicon tubing, although for some reason it specifically says not to use with fuels (makes me wonder what fuel silicon tubing has different…)

http://www.usplastic.com/catalog/item.aspx?itemid=23884&catid=799

> not to use with fuels
Yes, that is correct. Silicones are not suitable for use with hydrocarbon fuels.

Cheers