I emailed Camco and they got back to me today. I wanted to paste their comment here so everyone knows
"Thank you for your email. There is no expected “lifetime” of the RhinoFlex. It sounds like you take great care of it and if you continue to do so it should continue to last you, however it couldn’t hurt to have a spare in case of emergencies"
__________________ "Take The Road Less Traveled"
2013 Rockwood Roo 233s
2013 Ford F150 FX4
I've been an RVer since 2007, Lifetime Camper
You can get a 15' kit for $33, I'd say after six years it's time and at just over $5.50 a year that's been a good investment. If your elbow is still good you can get a 10' hose for $20. I'd replace it and keep the hard plastic parts as spares.