On Tuesday, 4 August 2020 19:08:39 UTC+1, Tim+ wrote:
I have a nice old cast iron casserole dish with a solid cast iron loop
handle on the lid. Even when used on the hob the handle gets too hot to
handle.

Id like to wrap it in something oven proof to make it easier to handle.
Asbestos string? ;-). Hopefully theres a safer substitute for this.

Tim

How about some sort of silicone? Perhaps in the form of a cord or string or whatever.

For a pan not to be used in the oven, ordinary string would likely be fine. But in the oven, no.

Several such products on Etsy - though probably many other sources.