insulating tape (electrical tape). An adhesive-backed flexible tape used as a temporary insulation over wire terminals and wire splices. This tape is usually made of a polyvinylchloride material. One side of the tape is coated with an adhesive, and the tape is wound over areas of bare wire to insulate it.
insulation (thermal). A material used to prevent the transfer of heat by conduction. Thermal insulation, for example, keeps hot air ducts from overheating the structure through which they are routed.
insulation blanket (turbine engine aircraft component). A layer of fireproof insulating material used to keep heat from the tail pipe of a gas turbine engine from damaging the aircraft structure. Insulation blankets are usually quilted, to allow the maximum amount of insulating material to be used and at the same time make the blanket easy to install and hold in place.
insulation resistance. The DC resistance of an electrical insulating material. Resistance specifications normally list the amount of leakage current allowed for a given applied voltage.