National Stock Number: 1660-12-379-5580
  Federal Supply Class: 1660
  National Item Identification Number: 123795580
  Description: INSULATION PIPE COV
  Detail: 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. 
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