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 6320-01-501-7935
NSN 6135-01-562-6582
NSN 5835-01-408-7576
NSN 2925-01-354-1752
NSN 6135-01-092-4734
NSN 5990-01-038-5020
NSN 5920-01-343-0780
NSN 5999-01-352-5855
NSN 6685-00-776-4622
NSN 5990-01-443-2931
NSN 6610-01-331-6966
NSN 6685-00-515-6522