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 6150-00-233-9459
NSN 5990-01-650-9034
NSN 5935-01-331-7077
NSN 6320-01-462-2295
NSN 5920-01-447-2225
NSN 4140-01-440-9203
NSN 6135-00-826-4798
NSN 5990-01-086-4825
NSN 5835-00-185-4919
NSN 6220-00-726-7971
NSN 5905-01-645-9205
NSN 5950-00-073-4277