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 5855-00-228-8446
NSN 5930-01-149-1406
NSN 5930-00-203-1321
NSN 6240-01-152-2662
NSN 5945-01-523-1107
NSN 6110-00-086-2990
NSN 5935-00-086-7134
NSN 5975-00-155-4181
NSN 5935-00-543-9710
NSN 6645-01-592-0540
NSN 5920-00-727-9093
NSN 6240-00-170-5302