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 5930-01-110-2987
NSN 5895-00-635-9227
NSN 5950-01-139-4371
NSN 6150-01-158-6152
NSN 5965-01-113-9061
NSN 6610-01-267-9881
NSN 7035-01-049-6776
NSN 5920-00-676-9113
NSN 6240-00-144-4566
NSN 5975-01-387-9307
NSN 6320-01-176-8367
NSN 6145-00-964-1523