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 6240-00-105-0584
NSN 5925-01-466-9616
NSN 5915-00-564-2490
NSN 7035-01-026-0117
NSN 5945-00-932-5219
NSN 6105-01-316-3485
NSN 6645-01-111-9825
NSN 6645-01-167-5814
NSN 5920-01-523-9171
NSN 6145-00-778-3625
NSN 6110-00-258-8542
NSN 5996-01-577-3838