Thermal Velocity Extreme Heat Sleeve is an extremely high temperature resistant resin impregnated fibreglass sleeve commonly used as thermal protection for wires, cables and hoses that are subjected to continuous and extreme high temperature environments, such as engine manifolds and exhaust systems. Extreme Heat Sleeve is braided from fibreglass yarns and coated with high temperature resins. Extreme sleeve is tough and durable, maintaining its tight structure under extreme vibration, abrasion, mechanical stress and temperature variations. Extreme Heat sleeve is available in a wide range of diameters and is silver in colour. It installs easily over a variety of applications to either deflect or retain heat in environments up to 1,200F (650C).