Estopper Hydroswell S47 is a unique sealing compound which expands in a controlled fashion when exposed to moisture, forming a compression seal in concrete joints. Estopper Hydroswell S47 is ideal for use in horizontal and vertical construction joints for cast in-situ concrete structures.
Estopper Hydroswell S47 is manufactured utilizing a specialized mixing process which encapsulates hydrophillic materials into a rubber based creating a controlled, moisture activated seal. This product has the structural integrity of a rubber-based sealant, the features of a butyl sealant, as well as the ability to expand to create a self-healing joint material.
Estopper Hydroswell S47 has been tested in accordance to ASTM D471:2016a for Expansion Volume Rate, ASTM D5385 for Water Head Pressure and complied with the specification in this data sheet.