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 6105-00-763-7967
NSN 6650-00-307-3437
NSN 6645-01-430-4125
NSN 6220-01-469-5533
NSN 5910-00-005-9418
NSN 5996-00-912-1602
NSN 6685-01-134-9561
NSN 5975-00-461-4833
NSN 5925-01-373-7068
NSN 6105-01-184-3209
NSN 6685-01-187-1550
NSN 5835-01-089-7615