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 6145-00-155-5297
NSN 5965-01-633-8849
NSN 6150-01-266-9022
NSN 5998-01-518-2124
NSN 5950-01-439-5639
NSN 5905-00-456-0937
NSN 6610-01-122-0064
NSN 5960-01-031-1759
NSN 6145-01-233-4796
NSN 5835-01-106-1456
NSN 6240-01-246-0102
NSN 5895-00-883-2565