Post Master General
Join Date: Apr 2012
Location: Bowling Green, VA
I Ride: '09 ZX6R
(I know I'm preaching to the choir, still a good conversation for folks lacking the background)
No matter where they are stored, eventually the compounds that make up the hose will become stiff. Almost all plastic parts (synthetic rubber, too) out gas in the same way fuel does. The smallest molecules in the blend evaporate most easily leaving the longer heavier stuff behind. The aromatics leaving the plastics in a car interior are partially responsible for the film of stuff that forms on the inside of the windshield.
As long as a hose is not disturbed, it will maintain the same seal it had when young and healthy. The older and stiffer it gets, the less flexation, and compressible it will become. Re-using an old hose or gasket reaches a point of diminishing returns where more clamping force does nothing for improving the seal. This is also true of gaskets.....
The 'redneck' solution used to be to trim off the brittle part, and re-use what remains. So long as there is sufficient slack to make the connection, it's a viable fix. Modern manufacturing does not impart significant excess, the opportunity to use this solution is ever smaller.
"Basic stuff fellas. Use your head for something other than to break your next fall."