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 5950-00-782-4875
NSN 6145-01-065-2314
NSN 5895-01-506-4741
NSN 6320-00-681-1324
NSN 6645-01-592-2557
NSN 5920-00-590-4192
NSN 5895-00-725-2702
NSN 7035-01-328-7448
NSN 6650-00-134-5130
NSN 6130-01-377-0370
NSN 6685-00-045-3211
NSN 5998-00-541-8792