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 6645-01-644-2563
NSN 5996-01-049-7841
NSN 6620-00-581-8984
NSN 5999-01-347-0635
NSN 5985-00-681-3586
NSN 5990-01-139-6042
NSN 5905-01-091-5940
NSN 6240-01-438-8044
NSN 5925-00-179-8327
NSN 5998-01-149-3517
NSN 6130-01-589-4350
NSN 5945-00-279-6554