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 5960-01-391-8860
NSN 5935-00-725-7108
NSN 6110-01-056-4964
NSN 5950-00-147-7866
NSN 6645-00-646-6631
NSN 5855-01-406-2606
NSN 6240-00-170-5302
NSN 5999-01-469-1522
NSN 6620-01-494-9858
NSN 5996-01-161-3832
NSN 5950-00-167-5035
NSN 5925-00-102-8010