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 5985-01-456-9994
NSN 6610-01-546-9693
NSN 5930-01-468-6206
NSN 5950-00-375-8284
NSN 6220-01-485-4233
NSN 5915-00-518-1644
NSN 5935-01-408-0760
NSN 6645-00-984-7687
NSN 5835-01-659-5206
NSN 5985-00-223-3042
NSN 6320-01-119-3935
NSN 5945-01-539-8872