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 5985-01-272-8974
NSN 6685-01-410-7583
NSN 5835-01-085-4300
NSN 5930-01-660-6329
NSN 6610-01-422-2376
NSN 6110-01-289-2997
NSN 5910-01-598-5210
NSN 6145-00-284-1495
NSN 6685-01-073-1432
NSN 5996-01-144-4691
NSN 5975-01-474-3829
NSN 5910-01-414-5422