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 5975-01-015-2697
NSN 5996-01-585-0094
NSN 5960-00-273-3058
NSN 6610-01-535-4230
NSN 5915-00-542-2179
NSN 5915-00-079-6415
NSN 6610-01-026-1701
NSN 5930-00-976-9290
NSN 5985-01-329-1670
NSN 5905-00-104-7235
NSN 5915-01-160-8175
NSN 5960-01-471-8201