The stuff you're thinking of is crap and cheap... it is ducting for clothes dryers... this flog...
you want to go to a race store like revolution racegear and get some neoprene flexible tubing... it's expensive, but shits all over dryer ducting... you want this stuff
and since I'm feeling generous, I found you a link where you might be able to get it cheaper than a race shop... they charge like $80/m or something rediculous
Go here - Tyco Flow Control