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 5895-00-961-0031
NSN 7035-01-066-8308
NSN 5975-00-979-6528
NSN 6135-01-223-3869
NSN 5960-01-157-4509
NSN 6610-01-501-2024
NSN 6145-00-505-7555
NSN 5935-01-124-2878
NSN 5920-01-291-1512
NSN 6645-00-479-9334
NSN 7035-00-860-9645
NSN 6130-01-322-8507