I may/should have some Revotec will check, PM me to remind me in case I forget... It's good stuff btw unless someone else has some Samco.
I've got an offcut (over 100mm long) of 25mm Fluoro lined blue silicone hose, not Samco branded but this; Auto Silicone Hoses - Silicone Fuel & Oil Fluoro Straight Hose - 1 Metre - Blue The fluoro lining makes it oil resistant but I'm sure it's still good for coolant etc, think I've also got some wire-reinforced 25mm but that is thicker walled. You're welcome to it if it's any good to you.