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 6145-00-006-8565
NSN 6110-01-622-8535
NSN 4140-01-390-9552
NSN 6220-00-643-4045
NSN 5965-00-852-6258
NSN 5910-01-504-2305
NSN 5996-01-454-6938
NSN 6110-00-519-1227
NSN 5998-01-634-0604
NSN 5930-00-420-3896
NSN 4140-01-573-7272
NSN 5930-00-441-9001