Enviroplug Medium & Coarse are pure Wyoming Bentonites, designed for use as sealants for hole abandonment, casing seals or any vertical seal to prevent water movement up or down a bore hole.
When absorbing water, it swells to fill voids, exerting pressure against all surfaces to create a flexible low permeability seal.
Since Enviroplug is introduced in a dry state, shrinkage cannot occur and there is a reserve expansion capacity. Generally hydration takes 1 to 2 hours.