[ducatiman]

Originally Posted by Triple Jim

@ducatiman will have your answer, but in general I use the same type of hose for vacuum lines that I use for fuel lines, in the right size, of course.

I've been using Tygon® F-4040-A tubing. I got it here, but there are many suppliers: https://www.mcmaster.com/tygon-f-404...nd-lubricants/

a note exists in their description..... do not use with ethanol-based gasoline.

However, for vacuum applications, would likely be fine, as would auto parts vac line. Though correct sizing is important, not too loose, not too tight, in any appllcation.