I've found that hydraulic hose doesn't especially like air compressor service, either.   The average "out of service" leftoever hydraulic hose seems to last about 3-5 years when attached to the head of an air compressor.  When it fails you will find the hose  to be harder then heck.  

My latest lazy-may replacement is the flexible convoluted copper tubing intended for hooking up water5 heaters.