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 6130-01-392-1023
NSN 6685-01-337-6826
NSN 5910-01-556-8008
NSN 6650-01-476-3329
NSN 6145-01-562-8763
NSN 5965-01-483-7244
NSN 6610-00-454-6635
NSN 5996-01-598-7786
NSN 5965-01-038-8081
NSN 6320-01-119-3935
NSN 5996-01-649-7993
NSN 5985-01-342-1365