Fiberglass layered between steel and aluminum
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 5996-01-511-2138
NSN 6685-00-682-7459
NSN 5905-00-020-7944
NSN 5910-01-117-3020
NSN 5996-01-492-5408
NSN 5945-01-129-7628
NSN 5998-00-801-4649
NSN 6240-00-130-5643
NSN 5835-01-228-4474
NSN 5999-00-723-9365
NSN 6650-01-544-0366
NSN 6135-01-528-6896