I'm not sure about your area, but here several of the local auto parts places, or any of the tractor dealers will make hoses... Don't tell them what its really for if you don't have to, just tell them you need a hose the same length and with the same ends. No need to confuse the phone jockey behind the counter with something they haven't seen. As far as using a hydraulic hose for the vacuum service, the worst that will likely happen is your pocket book is slightly thinner due to the more expensive hose. To the guy behind the counter that has no clue and finds out its not for the application he is supposed to sell, they might think that a hose rated for 3000 psi service will self destruct under a negative pressure of less than 14 psi and refuse to sell you one. If he gets really irate, tell him its the suction line to a small pump, they also are frequently under what would be considered vacuum pressures if the fluid was air.
