SUPERSWELL® 47B Hydrophilic Butyl Waterstop SealPRODUCT BROCHURES20 x 15mm specification25 x 19mm specification  VIEW INSTALLATION VIDEOSuperswell® 47B Hydrophilic Butyl Waterstop Seal is a unique sealing compound which expands in a controlled fashion when exposed to moisture, forming a compression seal in concrete...

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