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 5965-00-246-4767
NSN 6620-01-609-6259
NSN 5920-01-418-7423
NSN 5925-00-245-3391
NSN 5835-01-384-3206
NSN 5930-01-501-6854
NSN 6220-01-464-2588
NSN 6240-00-698-5822
NSN 6145-00-406-4471
NSN 5990-00-107-0835
NSN 5985-01-584-9210
NSN 6150-01-454-9873