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Graded Sodium Bentonite

HOLEPLUG naturally occurring Wyoming sodium bentonite clay is a sized and graded chip material used to seal and plug earthen boreholes.

HOLEPLUG is available in graded 3/8″ bentonite chips

Data Sheets (DS)

Applications and Functions

  • Grouting annulus in all types of wells, particularly environmental monitoring well applications
  • Sealing above gravel packs
  • Plugging decommissioned boreholes
  • Stemming shotholes
  • Sealing around conductor pipe
  • Sealing lost circulation zones
  • Shutting off artesian flow


  • NSF/ANSI/CAN Standard 60 certified 
  • Helps prevent entry of surface water into boreholes
  • High swelling potential
  • Easier to apply than pellets
  • Cost effective
  • Simple to apply, mixing not required
  • Helps prevent vertical movement of fluids in the hole between porous zones
  • Helps form a permanent, flexible downhole seal
  • Helps allow hole re-entry
  • Rehydratable

Safety Data Sheets (SDS)