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 6610-00-066-9353
NSN 5945-00-615-9218
NSN 5935-01-652-5144
NSN 5855-00-361-0167
NSN 6110-01-025-6139
NSN 5998-01-424-6100
NSN 5975-01-524-3603
NSN 5945-01-458-1154
NSN 7035-00-408-8170
NSN 5905-01-593-1017
NSN 6150-01-069-2794
NSN 6620-01-274-3423