19.520 in.Lg, 3.000 in.Id, 0.380 in.Thk;
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 6645-00-114-2678
NSN 5920-01-569-1383
NSN 5985-01-373-7402
NSN 2925-01-508-2517
NSN 5835-01-531-0379
NSN 6105-01-236-0799
NSN 6650-00-809-1817
NSN 5998-00-597-7175
NSN 5835-01-043-1576
NSN 5999-00-764-9369
NSN 5895-00-503-7332
NSN 6150-00-426-6837