PondSeal is an all natural product that can be used as a water containment membrane (compacted or pure layer) in stock ponds, sewer lagoons, landfills, irrigation canals and cut-off walls, decorative garden ponds, etc. PondSeal’s high swelling properties makes it a preferred choice for all your compacted or pure layer water-containment membranes.
Unaltered high-swelling sodium bentonite.