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 6240-01-153-2861
NSN 7035-00-335-7283
NSN 6650-00-296-4670
NSN 6240-00-569-5854
NSN 5990-01-424-2954
NSN 7035-01-321-7456
NSN 6145-01-214-8037
NSN 5965-01-317-6077
NSN 7035-00-562-9881
NSN 5998-01-037-9654
NSN 6110-00-271-9928
NSN 6610-01-264-4888