TamSeal R is a hydrophilic rubber waterstop that has been developed for water stopping function in construction and civil engineering application, which cause inevitable leaking all the time. TamSeal R is capable of sealing heads of water up to 50 metres and is widely used to seal horizontal and vertical construction joints for poured in-situ concrete. It is treated with a delay coating thus preventing it from premature expansion.
As with any hydrophilic waterstop, TamSeal R will return to its original size if the concrete and substrate is completely dry. If water or moisture is introduced again to the joints, TamSeal R will then re-expand to seal the potential leaking joints. It has been tested in numerous wet and dry cycle conditions.