An item composed of one or more materials, molded, compressed, and/or baked into a rigid covering of irregular shapes and sizes. it is designed to cover air ducts and/or air duct fittings used in air conditioning, heating, cooling, pressurizing and de-icing systems to restrict the dissipation of heat. it may completely or partially encase the item for which designed. it may be furnished with or without fillers, cement, and/or separate or attached accessories for installation, (excluding flexible air duct covering and rigid pipe and pipe fitting coverings used in construction and building materials). Excludes insulation blanket, thermal, aircraft; insulation pipe fitting covering, thermal; and insulation sleeving, thermal.
Classification: Other parts of airplanes or helicopters for use in military aircraft (excludes propellers, rotors, undercarriages, and parts thereof)
NSN 5855-00-433-2377
NSN 5998-00-117-4566
NSN 5960-01-573-6483
NSN 5895-01-401-5388
NSN 5960-01-469-5874
NSN 5945-00-332-6954
NSN 6610-00-733-5830
NSN 6105-00-518-2863
NSN 5855-00-912-3885
NSN 7035-00-092-4356
NSN 5920-00-946-9147
NSN 2925-01-121-3355