I work with Eaton /Aeroquip hose and fittings. Eaton offers a product a product with a blended compound call AQP which gives a 300 degree continuous working temperature
The AQP compound in the attachment is a comparable construction to a wet exhaust hose but is offered for higher pressure applications.
Look up your local Eaton Hydraulic Hose representative for the most part it's readily available
I been selling the product and have worked with it in 275 degree applications for 5 years of service
not baking out and remaining playable.