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 5855-00-797-8217
NSN 6240-00-344-8582
NSN 5985-01-444-1552
NSN 5975-01-327-3296
NSN 6240-01-579-3758
NSN 5895-01-418-0850
NSN 6620-01-596-3642
NSN 5999-00-236-8239
NSN 6105-00-427-9615
NSN 5960-01-241-0105
NSN 2925-01-459-8093
NSN 5835-01-060-9491