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 5998-00-234-0093
NSN 5920-00-437-8450
NSN 6150-01-264-3304
NSN 5990-00-112-2440
NSN 6150-01-505-1686
NSN 5996-01-037-8740
NSN 5965-01-398-3099
NSN 5985-00-005-2503
NSN 6650-00-641-6139
NSN 5935-00-118-4011
NSN 5985-01-353-0099
NSN 6240-01-528-8769