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 6105-00-469-5464
NSN 5960-00-005-7132
NSN 5895-01-314-6223
NSN 6240-01-472-0868
NSN 6610-01-529-8529
NSN 5855-01-335-8907
NSN 6320-01-436-9228
NSN 5895-01-287-1224
NSN 5910-01-480-0354
NSN 5975-00-936-5263
NSN 5990-01-216-0148
NSN 5965-01-335-2245