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 6645-01-455-1293
NSN 6320-01-209-0952
NSN 6220-01-045-0306
NSN 6130-01-017-3097
NSN 7035-01-380-6538
NSN 5930-00-067-6751
NSN 5835-00-269-2232
NSN 5930-01-359-9053
NSN 6130-01-345-9712
NSN 5945-00-234-0223
NSN 5935-01-570-5700
NSN 5990-01-196-2953