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 6145-00-498-0851
NSN 6220-01-528-4398
NSN 5985-00-073-2344
NSN 4140-01-429-8545
NSN 6135-01-391-6515
NSN 5855-01-292-5639
NSN 5945-01-222-0847
NSN 5935-01-370-4843
NSN 4140-00-269-5795
NSN 6105-01-105-7676
NSN 6645-01-205-3869
NSN 5945-00-372-3586