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 5855-01-324-9269
NSN 5999-00-337-6435
NSN 5910-01-487-6757
NSN 5855-01-242-8428
NSN 5935-01-268-9393
NSN 5990-00-172-7951
NSN 5960-00-893-9402
NSN 5930-00-203-1203
NSN 5915-01-476-2892
NSN 6645-01-170-5402
NSN 6220-01-195-9626
NSN 4140-01-352-1787