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 6240-01-597-8430
NSN 5950-00-707-1426
NSN 6650-01-258-6438
NSN 5925-01-271-7652
NSN 5915-00-033-3926
NSN 5920-01-328-9791
NSN 6130-01-509-2926
NSN 6620-01-032-3937
NSN 5996-00-126-6139
NSN 6145-01-564-6288
NSN 6150-01-336-7261
NSN 5915-01-336-3012