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 5950-00-879-3435
NSN 6105-00-740-7757
NSN 6145-01-605-7638
NSN 5998-00-369-0856
NSN 6320-01-052-2118
NSN 7035-01-040-6373
NSN 5999-01-450-3792
NSN 5950-00-661-2612
NSN 6145-00-388-8319
NSN 7035-00-079-7189
NSN 6685-01-554-3708
NSN 6130-01-347-3620