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 5950-01-619-3846
NSN 5935-01-424-0575
NSN 5925-01-607-7712
NSN 6110-00-144-6763
NSN 5895-01-246-2475
NSN 5920-00-881-0359
NSN 6130-01-444-3909
NSN 5950-01-547-0043
NSN 5945-01-094-7961
NSN 5996-00-838-0687
NSN 5950-01-443-5160
NSN 5945-01-152-8560