A heat shield is a device or covering designed to protect against excessive heat or high temperatures. It is generally used in applications where heat or heat sources can damage sensitive components or materials. Anti-heat jackets are often made from heat-resistant materials such as fibreglass, silicone, Kevlar or special composite materials.
They are commonly used to protect electrical cables, hoses, hydraulic lines, wires and other heat-sensitive components from high temperatures, flames or other heat sources. They are used to keep the temperature of internal components within acceptable limits and prevent the risk of fire, overheating or damage to components.