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 2925-01-424-0235
NSN 5965-01-205-6249
NSN 2925-01-033-0141
NSN 6645-00-930-3566
NSN 2925-01-205-4584
NSN 6150-01-134-9133
NSN 5945-01-446-7074
NSN 5950-00-004-5576
NSN 5930-00-241-7587
NSN 7035-01-169-6551
NSN 5990-00-170-4239
NSN 5950-00-228-4706