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 5996-01-367-8492
NSN 6220-00-969-3201
NSN 5960-01-364-1318
NSN 6105-00-018-0735
NSN 5925-01-503-0394
NSN 2925-01-146-0278
NSN 6685-01-196-6082
NSN 5930-01-539-1431
NSN 5985-01-407-4688
NSN 5910-01-188-6858
NSN 5930-01-424-3303
NSN 5935-01-190-7059