What kind of plastic line? I've used a decent amount of name brand LLDPE tubing, and I've never seen it fail or even appear to degrade. I have had issues with

What kind of plastic line? I've used a decent amount of name brand LLDPE tubing, and I've never seen it fail or even appear to degrade. I have had issues with compression connectors at the ends (they don't like to be too loose or too tight), and I've seen plenty of failures of the really crappy washers that get used in "female compression" connectors.