EPB tube trouble: or how to ruin ur day.....

WEll, truck has been running crappy, so in my quest to eliminate all possibilities of whats causing it, I pulled the tube. Looked good from top & bottom.....But the MIDDLE IS SHOT!!!:icon_mad: Of course I dont have the replacement part handy, cuz no one thought I needed it.:nono: WRONG!!
MY ? IS< can it be temporarily patched till I get the new tube?? I have all kinds of stuff to try, HELP PLEASE!!!!:thumbsup:

thanks in advance