Aluminized Heat Sheaths/tubes have a reflective aluminum layer on one side and ceramic fiber on the other.
Available in a range of sizes in 15, 20 and 30mm
They can be used on braided steel lines, oil lines, plastic tubing and wiring harnesses … anything you want to protect from radiant heat.
They can handle 800 degrees direct all the way up to 2000 degrees radiant.
Price is for 1 meter length