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 6130-01-086-8418
NSN 6150-01-366-7480
NSN 6105-01-512-1831
NSN 5855-00-491-7079
NSN 5999-01-267-9744
NSN 4140-01-525-7692
NSN 6145-01-245-1489
NSN 5996-01-164-4871
NSN 5895-01-471-6125
NSN 5835-00-126-2961
NSN 7035-00-679-9027
NSN 6645-01-394-5149