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 5950-01-564-4539
NSN 6220-00-471-4011
NSN 5895-01-393-8611
NSN 5950-01-272-4363
NSN 5910-01-550-7184
NSN 6145-00-311-8884
NSN 6220-01-120-7779
NSN 5990-01-411-1917
NSN 6610-00-681-0590
NSN 6145-01-343-2872
NSN 6650-00-448-8290
NSN 6105-00-256-6369