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 5996-00-146-9746
NSN 5960-01-185-4216
NSN 5905-00-126-5884
NSN 7035-01-211-5636
NSN 6220-01-024-5931
NSN 5985-01-310-8473
NSN 5945-00-823-6156
NSN 4140-00-350-7489
NSN 6105-00-698-0385
NSN 5915-01-564-3790
NSN 5975-00-035-6524
NSN 6145-01-461-8062