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 6320-01-271-0247
NSN 2925-01-458-5808
NSN 5855-01-574-7092
NSN 5920-01-599-5458
NSN 6320-01-362-9518
NSN 5996-01-379-4943
NSN 5910-00-636-4697
NSN 5895-00-901-2186
NSN 5975-01-608-9716
NSN
NSN 5985-01-524-0143
NSN 5945-01-284-1333