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 5985-01-023-8011
NSN 7035-00-465-3298
NSN 5935-01-281-8424
NSN 5999-01-518-9177
NSN 7035-01-106-3476
NSN 5965-01-382-9081
NSN 5990-00-804-0678
NSN 5895-01-531-5297
NSN 2925-01-027-1293
NSN 4140-01-069-2307
NSN 5975-00-033-5722
NSN 5905-01-138-5481