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 5935-00-196-1601
NSN 6105-01-091-2564
NSN 5996-01-442-8751
NSN 5895-00-225-7943
NSN 5905-01-246-9795
NSN 5895-00-535-4834
NSN 5925-01-199-9341
NSN 6610-01-525-5228
NSN 7035-00-510-3778
NSN 6650-01-589-3585
NSN 6130-00-802-2283
NSN 5925-00-270-5924