B-1b aircraft; 4.000 in. Id by 0.500 in. Wall thk by 24.000 in. Lg
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 6220-01-418-1649
NSN 4140-01-481-5171
NSN 5935-01-266-9497
NSN 6620-01-250-1692
NSN 6130-01-634-0603
NSN 6150-00-650-6790
NSN 5855-00-797-8217
NSN 5998-01-421-1800
NSN 5895-01-051-0450
NSN 5920-01-468-6227
NSN 5895-00-812-6914
NSN 5990-01-498-0641