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 2925-00-943-2263
NSN 6620-00-247-7427
NSN 5835-01-347-8714
NSN 5925-01-320-2767
NSN 5855-00-014-5008
NSN 5920-01-166-7421
NSN 5990-00-258-0228
NSN 5998-00-601-3893
NSN 6150-01-534-1105
NSN 7035-01-487-4038
NSN 6135-01-464-2075
NSN 5975-01-141-7330