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 5925-01-397-0559
NSN 5925-00-924-0515
NSN 6105-01-437-4722
NSN 5985-00-977-3228
NSN 6240-01-426-5581
NSN 5835-00-632-8621
NSN 6145-00-487-9575
NSN 6130-00-629-0738
NSN 5855-01-306-5655
NSN 6105-00-079-2409
NSN 5835-01-318-5268
NSN 5996-01-415-1818