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 6105-00-279-3044
NSN 5945-01-263-5844
NSN 5930-00-526-1928
NSN 5910-01-129-9814
NSN 5990-01-202-0001
NSN 5855-00-179-8588
NSN 5950-01-474-5576
NSN 6645-01-449-8752
NSN 4140-01-008-0559
NSN 5905-01-450-6460
NSN 6620-00-891-8584
NSN 6150-01-189-6974