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 5996-00-107-5357
NSN 6145-00-125-0742
NSN 5920-00-271-3217
NSN 5975-01-086-6657
NSN 6220-01-318-3076
NSN 5950-01-380-6366
NSN 5910-01-017-4315
NSN 6220-01-383-6502
NSN 6110-00-813-8632
NSN 5855-01-551-7923
NSN 5925-00-466-7308
NSN 5985-00-595-8633