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 6130-00-038-8274
NSN 5998-01-125-2543
NSN 5920-01-631-3203
NSN 6220-01-210-3228
NSN 5996-01-270-2610
NSN 5855-00-400-2622
NSN 6240-00-533-1493
NSN 6110-01-253-4696
NSN 6650-01-411-6292
NSN 6110-00-127-5166
NSN 5920-01-270-7795
NSN 5905-01-114-9019