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 5950-00-985-0399
NSN 5945-01-143-1662
NSN 6320-00-300-5556
NSN 5835-01-034-5206
NSN 6240-01-028-6737
NSN 5930-01-447-7516
NSN 5960-00-719-0125
NSN 6150-00-603-9825
NSN 6610-01-018-4428
NSN 5996-00-017-9189
NSN 6685-00-204-3174
NSN 5910-01-046-7914