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 6150-01-164-5936
NSN 5920-01-054-7230
NSN 5996-01-213-5184
NSN 6320-00-845-3261
NSN 6610-01-633-8931
NSN 5925-00-876-1042
NSN 5920-01-384-6065
NSN 5855-01-003-7102
NSN 6620-00-829-1860
NSN 6150-00-143-5396
NSN 5990-01-386-5561
NSN 5998-00-216-7436