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 5996-01-202-9338
NSN 5925-01-129-6222
NSN 5990-01-255-7387
NSN 5985-00-856-0835
NSN 5930-01-423-8976
NSN 6135-01-196-7399
NSN 5855-01-510-9416
NSN 6320-00-343-1798
NSN 5945-01-302-8959
NSN 5925-00-854-9200
NSN 5920-01-574-5118
NSN 6220-01-622-1996