It's just rubber hose on the inside. The ones that came out of my schiada were shot too.
Rex marine (Rexone) sells it, Gofastracer sells it and I sell it.
I can get you s.s. braided hose with teflon inside that will last forever. They come with 304 s.s. CRIMPED on ends so you would need to measure it correctly. That is something I don't stock and will take a day or 2 to get. If you want the s.s. braid with rubber inside I keep lots of that in stock all the time.