You don't mention where it broke. Is it broken off at the very end or in the middle somewhere. If the ends are still OK and you love that vac, you can fall back on an old trick used by the military in WWII - duct tape! Find another vac hose the same diameter (any vacuum repair store will have them in stock) or you can take a piece of hose to a home improvement store to match up.

Cut out the broken area as evenly as possible. Cut a new piece of hose the same size you removed so the hose remains the same length. Wipe off the edges to remove any dirt. Lay your tubing on newspaper or cardboard. Next you'll need a sealant that will not only stick the parts together, it will remain strong after drying. (Silicone or epoxy glues both work.) Work on ONE break at a time. Apply a thin bead between the two pieces & press together. DO NOT DISTURB but leave the pieces to dry 24hrs. After it's dry use duct tape to reinforce the break (trust me, you'll be glad you did). Then fix the other side of the cut-out.

If it broke off at the very end, remove the hose from the connectors on both ends. Clean out any old hose -if any - if the hose fits inside the connectors. If it fits over a connector, make sure the outside's clean & smooth. Insert/Apply a new hose using the sealant. Duct tape after it's dry. (Yeah, I love the stuff. Saves a ton of extra work by supporting the stressed area.)

If it's just a small crack in the hose clean the broken ends so there's no dirt. Fill the crack in the hose with a thin bead of sealant, dry & duct tape it.

I've used this trick many times, so I know it works. Good Luck!