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 6105-01-007-6115
NSN 5998-01-328-9343
NSN 5960-01-515-4791
NSN 5930-00-857-2803
NSN 5895-01-525-7481
NSN 5905-00-329-5851
NSN 5915-01-441-7857
NSN 5910-01-237-2621
NSN 5996-00-823-6081
NSN 6240-01-610-4663
NSN 2925-00-225-5386
NSN 5960-00-265-0726