One has to be very careful when ordering vacuum hoses that "look like" the common vacuum hoses used in our Industry.
A lot of hoses used in the Pool Industry are actually, "Blow Molded" (process of manufacturing) and are a great --copy of----the real thing.
Yes, it will crush easily with any extreme vacuum pressure, and or used as a exhaust hose.
Best to all;
Ed Valentine
cross-American corp.