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Newton 312 BentoProof is a sodium-bentonite based hydrophilic water bar, well engineered for sealing construction joints in concrete structures. If BentoProof comes into contact with water (other than the normal dampness of the concrete, which is not sufficient) it will swell as it stores the water.

Specifications

Material(s)
Sodium bentonite swelling tape
Colour(s)
Black
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