This heat sleeve is made of woven fiberglass that is coated with a special silicone rubber, which gives this heat sleeve its properties. This heat sleeve manages a temperature of +260 ° C. And under shorter periods of time up to +1000° C. Easy assembly thanks to velcro lock.

Make sure the velcro lock is not directed towards he heat source. Since the velcro lock will have much lower temperature recistance comapired with the silicone surface.