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 5935-00-079-1650
NSN 6685-01-023-2166
NSN 5920-00-835-0615
NSN 6645-01-006-6735
NSN 5895-00-959-2284
NSN 6150-00-155-3578
NSN 5835-01-558-9444
NSN 6130-00-508-3655
NSN 6135-00-856-1343
NSN 5985-01-067-9137
NSN 5930-00-720-3004
NSN 5950-01-537-1110