Replacement Fuel Hose/Fuel Line

[unfazed]

My FZS600 decided to spring a pinhole leak in the pipe connecting the fuel tank to the fuel filter.
I bought a replacement hose from Halfords (8mm internal diameter) but it's not flexible enough to route through the same location as the previous pipe. It's reinforced and doesn't have the same bend radius.
Has anyone had any luck purchasing a suitable replacement fuel pipe online or at a brick-and-mortar store, that has the needed flexibility? Any recommendations?
The old pipe also had some kind of sheathing on it. Does anyone know what this is and whether a replacement hose needs it?Thanks

My reply in another post is also relevant here
https://foc-u.co.uk/index.php?topic=2712...#msg327206