Bentobar +

Bentonite waterstops are invaluable to the concrete and construction industries, providing an efficient means for sealing construction joints. Bentobar + has been sold worldwide for over 25 years and is well known for its stability and durability. Even after repeated wet-dry cycles, Bentobar + maintains a perfect seal thanks to its high rubber content. Bentobar + is also far less susceptible to washing out than traditional bentonite seals. In addition to the standard version, variants also exist for use in seawater (saline concentrations up to 3%) and contaminated water. Both exist in a wide range of sizes. Bentobar + standard version is 20mm x 25mm x 5m rolls.

Options to fix into place are  Bentobar fixing glue / swellable adhesive / mesh fixing cage.