Fiberglass layered between steel and aluminum
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 6220-00-452-5308
NSN 5960-00-835-3627
NSN 6620-01-306-0512
NSN 5925-00-788-0368
NSN 5985-01-438-5434
NSN 5960-01-185-4216
NSN 6145-00-930-4972
NSN 6110-00-377-9160
NSN 6110-01-457-2351
NSN 6240-01-310-9380
NSN 5996-00-969-6422
NSN 4140-01-611-7131