Used om f-4, phantom aircraft
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.
NSN 5996-00-862-3479
NSN 5915-00-556-2189
NSN 6240-00-964-3728
NSN 5935-01-649-8215
NSN 6150-00-952-2766
NSN 6105-00-851-5396
NSN 6150-01-463-2709
NSN 5999-01-246-9730
NSN 6110-01-463-2597
NSN 6320-00-456-2092
NSN 5920-01-322-2572
NSN 6145-00-763-6077