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 6105-00-904-3327
NSN 5925-01-634-0664
NSN 5985-00-277-7371
NSN 6650-00-905-9317
NSN 5905-01-421-4421
NSN 6610-01-644-2546
NSN 5996-01-226-0606
NSN 5975-01-046-3287
NSN 6610-00-604-0045
NSN 6650-01-364-8504
NSN 6150-00-940-8846
NSN 6130-01-310-0809