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 5945-00-916-0988
NSN 6610-01-252-8201
NSN 5855-01-383-6860
NSN 6685-01-241-2325
NSN 5965-01-435-1894
NSN 6650-01-539-9641
NSN 5996-01-500-2820
NSN 5945-00-887-7918
NSN 4140-01-005-5364
NSN 5835-01-580-0446
NSN 7035-00-541-8516
NSN 5915-01-568-5427