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 5855-00-688-9954
NSN 5999-01-486-9939
NSN 5935-01-478-4401
NSN 5910-01-003-6632
NSN 5985-01-348-3027
NSN 6240-01-569-8709
NSN 6610-01-452-2715
NSN 5835-01-432-8801
NSN 5945-00-659-3928
NSN 5835-00-498-8189
NSN 4140-00-674-2856
NSN 5965-01-352-0961