HOLEPLUG sodium bentonite is a naturally occurring Wyoming sodium bentonite clay that is sized and graded chip material used to seal and plug earthen boreholes. NSF/ANSI Standard 60 certified. HOLEPLUG bentonite is available in two particle size grades:
- HOLEPLUG 3/4″ grade (100% of particles pass through 3/4″ screen; all particles retained on 3/8″ screen)
- HOLEPLUG 3/8″ grade (100% of particles pass through 3/8″ screen; all particles retained on 1/4″ screen)