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 6685-00-471-4125
NSN 6320-00-925-0558
NSN 6145-01-294-6836
NSN 5905-00-592-1814
NSN 4140-01-164-3675
NSN 6610-01-293-9838
NSN 6130-01-034-1466
NSN 7035-00-267-5424
NSN 7035-01-253-2868
NSN 5935-00-448-1333
NSN 5910-00-947-6118
NSN 5950-00-069-2327