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 6645-01-275-8436
NSN 5935-00-066-8540
NSN 6610-01-375-9994
NSN 6610-01-461-8180
NSN 6135-01-296-1860
NSN 5945-00-128-2972
NSN 5960-01-450-8539
NSN 5985-00-274-4062
NSN 5945-01-343-8882
NSN 6620-01-256-4307
NSN 5910-01-026-1514
NSN 5990-01-176-2724