12.690 in.Lg, 2.500 in.Id, 0.380 in.Thk;
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 6130-01-152-4573
NSN 5965-01-138-9288
NSN 6135-01-364-0667
NSN 6645-01-481-9834
NSN 5930-00-073-8372
NSN 5945-00-282-3181
NSN 6685-01-192-0559
NSN 5895-01-443-1967
NSN 4140-00-626-6470
NSN 6110-00-971-2035
NSN 2925-01-386-7392
NSN 5985-01-388-6748