National Stock Number: 4330-99-667-9492
  Federal Supply Class: 4330
  National Item Identification Number: 996679492
  Description: INDICATOR,FILTER WA
  Detail: A MECHANICAL INDICATOR USED ON CENTRIFUGALS, SEPARATORS AND FILTERS FOR DRY OR LIQUID TYPE CLEANERS TO PROVIDE A VISUAL WARNING SIGNAL WHEN A FILTER ELEMENT NEEDS CLEANING OR CHANGING.
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