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 5965-01-284-0124
NSN 5945-01-421-1785
NSN 6610-01-061-8466
NSN 5950-01-157-2796
NSN 5975-00-106-0943
NSN 5895-01-573-7542
NSN 6685-01-245-0272
NSN 5950-01-470-6607
NSN 6105-01-492-5723
NSN 6620-00-981-6958
NSN 5895-01-383-6999
NSN 6645-01-492-5304