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 6135-01-587-6485
NSN 5990-01-606-9305
NSN 6610-01-360-3564
NSN 6220-01-344-1647
NSN 6145-00-207-8858
NSN 5996-01-514-5937
NSN 5996-00-829-6739
NSN 6645-00-574-9712
NSN 5950-00-566-1124
NSN 6620-01-095-8937
NSN 5975-00-942-1925
NSN 6105-01-063-2158