Bentonite Waterstop

Bentonite Waterstop is an expansion strip made of sodium bentonite and rubber combined. It is used for sealing joints. It seals against water. It is a kind of hydrophilic water sealer, with high water absorption. Unlike usual water sealers, Bentonite Waterstop utilizes rubber as base material to form a moisture activated sealant. This provides a controlled expansion preventing loss of integrity or be washed away by flowing water.