Possibly braided stainless steel brake hoses? The inner hose is teflon, with a braided kevlar sleeve over that, With another sleeve and then the braided stainless. Pretty tough stuff and available commonly from car and motorbike suppliers and brake shops etc. Not cheap though.
Or possibly, maybe, the braided stainless hoses made to go under your kitchen sink and connect the tap/s to the plumbing. Must be able to tolerate hot water and mains pressure can be as much as 80PSI so if they are overdesigned a bit might do the job.