Fuel hose would be fine, given the small size needed. The thickness to diameter ratio would be large enough to resist crushing. In larger sizes, like 5/16 or 3/8 inches, I would agree not to use fuel hose for vacuum service.

Per this, even 1/2" hose is rated for 24" HG vacuum.
SAE 30R9 fuel hose is available about anywhere. I didn't find a vacuum rating for the possibly more common SAE 30R7 fuel hose.

Last edited by klhansen; 05/30/2023 6:12 PM. Reason: added link
Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.