An (extremely) high temperature can have a disadvantageous effect on a conveyor belt, even to the extent that it can snap. A more serious scenario is a conveyor belt catching fire or a fire breaking out near one. In industries where the chances of these situations happening is above average, flame-resistant conveyor systems are simply essential.
Flame resistant conveyor belts are capable of actively extinguishing flames or at least considerably reducing them. This is a very valuable property, since fire can spread very quickly to, for example, the other parts of the conveyor system, the plant, or the entire premises. It can therefore cause a lot of damage or even explosions.
The use of a flame resistant-conveyor belt decreases these risks enormously.