KWIK-PLUG Medium & Coarse

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Screen-sized bentonite sealant, plugging agent


The KWIK‐PLUG Medium and Coarse are screen‐sized bentonite composed of a naturally‐occurring clay. It is used primarily to seal and plug earthen boreholes.

KWIK‐PLUG material will travel through water standing in the hole and reach the bottom of the hole with minimum hydration or swelling. The annular space can be completely filled, and bridging of the particles in the upper portion of the hole minimized. The annular space being completely filled is necessary to form an effective, long‐term plug.

KWIK‐PLUG is available in two sizes: KWIK‐PLUG COARSE (¾‐in. [19.1‐mm]) and KWIK‐PLUG MEDIUM (3/8‐ in. [9.5‐mm]) size. The size of the open annular space will determine which size should be used.


  • Sealing outside casing annulus
  • Plugging decommissioned boreholes
  • Sealing lost‐circulation zones
  • Sealing above gravel packs
  • Environmental monitoring wells


  • Prevents entry of surface water into boreholes
  • Forms a permanent, flexible, downhole seal
  • Allows hole re‐entry
  • Easy to apply, no mixing expense
  • More cost effective compared to pelletized bentonite
  • Certified to NSF/ANSI 60

KWIK-PLUG Medium & Coarse Resources

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