Cognizant service: navy;
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 7035-00-185-8683
NSN 5945-01-547-8996
NSN 5998-01-154-3683
NSN 6110-01-435-6486
NSN 6135-00-913-2062
NSN 5855-01-517-3104
NSN 6110-01-445-0337
NSN 5990-00-281-4164
NSN 6220-01-390-4090
NSN 6145-01-472-3120
NSN 5996-01-305-4892
NSN 5985-01-458-1764