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HydroTank 306 Swell Mastic

Fast-curing, swellable, single-component, polymeric adhesive sealant. The special composition of HydroTank 306 Swell Mastic makes the sealant swell when in contact with water (to about 200% of original size).

  • Key Benefits
  • Typical Applications
  • Technical Data
  • Key Benefits

    Key Benefits

    • Very high resistance to water pressure.
    • Delayed swelling – will not swell during the installation process or during the concrete cure.
    • Swells up to 200% of its original size to quickly seal leaks at joints in the structure.
    • Very resistant to the high alkalinity of concrete.
    • Maintains very high elasticity and tensile strength, even when swollen.
    • Age resistant, no embrittlement.

    Typical Applications

    Typical Applications

    Technical Data

    Technical Data

     Cured performance  Result
    Tensile strength 5.8 MPa
    Elasticity  Up to 11 x initial size
    Swelling capability Up to 3.5 times initial size
    Watertightness  1 bar
    Installation temperature  5ºC to 40ºC
    Service temperature  -40ºC to 100ºC

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