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 6145-00-419-0550
NSN 5960-01-049-8099
NSN 6135-00-235-1938
NSN 5905-01-132-6486
NSN 5855-01-569-4057
NSN 6650-01-264-7227
NSN 4140-00-874-2427
NSN 6240-01-459-7827
NSN 6105-01-216-0838
NSN 5965-01-575-2388
NSN 5905-01-036-0845
NSN 5960-01-175-7309