What's a low sound supression and durable material?

I’m looking for a material that will be used to make a 1’ long tube with very low sound suppression and is durable enough to hold pressure of at least 20 psi. Any suggestions on something that’s rather inexpensive and not exotic? A source would also be useful. Thanks -- Jeff

Answer:
Should read questions more closely.

There is also stainless steel braided hoses. Pressure and temp would be not an issue. Very flexible and vibrations would not be an issue. Steel should not absorb as much sound.

Readily available.
PVC pipe. It can hold a lot of psi well over 20
What about Schedule 40 PVC pipe?

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