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 5905-01-657-2775
NSN 2925-00-071-4197
NSN 5998-00-755-1528
NSN 6105-00-275-0826
NSN 6240-00-811-2777
NSN 5930-01-503-6666
NSN 5915-00-131-6344
NSN 5998-00-442-0495
NSN 5990-01-426-7350
NSN 5945-01-479-4232
NSN 5990-01-223-9414
NSN 5990-01-034-2390