hoseplumbing
As far as I know, their components are the EDPM/nitrile rubber inner tube, the stainless steel fittings/crimping at either end (possibly a plastic push-fit connector) and the stainless steel braid.
Provided they are stored correctly, I suspect the stainless steel components would not be an issue, but how about the rubber tubing? Does the rubber become brittle if left unused?
Is there any point beyond which you would no longer consider them safe for use?
I purchased a 1/2" IPS braided supply but the design doesn't permit the inner sealing cone to sit within the 3/8" opening in the quest valve, making it impossible to use. It seems the only option with these is the original type nut and a 3/8" OD supply tube/line.
I found some adapters which are designed for Flexi tap to quick connectors.
You simply screw one end on, then insert the other into the quick connectors like you would any other pipe.
Now that I've done it, it seems straight forward. But at the time i wasn't sure of the connection types or possibilities. Or how they worked.
Really cheap and easy to do. Tool-less infact.
Best Answer
Any rubber or synthetic will degrade with age it depends upon the composition at which rate that will happen. If they are old 10 years or so I would just buy new ones the risk from damage is to great.