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 6150-00-889-1245
NSN 5990-01-573-1634
NSN 6650-01-141-5999
NSN 5925-00-632-6098
NSN 5910-01-095-5384
NSN 6685-00-780-7787
NSN 5990-00-247-0975
NSN 5945-01-545-8800
NSN 5835-01-040-5201
NSN 6620-01-287-1443
NSN 4140-01-353-2205
NSN 6105-00-909-3847