Avanti International

- Model AV-248 - Flexseal for Moisture Activated MDI-Based Polyurethane Resin



Injected as a single component, catalyzed AV-248 Flexseal is a moisture activated MDI-based polyurethane resin. The chemical reaction is catalyzed by using AV-249 Flexseal AC and uses moisture as an initiator. Like other hydrophobics, AV-248 Flexseal withstands wet/dry cycles, but unlike other hydrophobics, it forms a resilient, impermeable flexible foam. This high quality resin is designed for sealing active and potential water leaks in various cracks, and annular spaces where flexibility is needed but is susceptible to wet/dry cycles. AV-249 Flexseal AC is the catalyst designed exclusively for use with AV-248 Flexseal. Typically, one container of AV-249  is used per 5-gallon container of AV-248. Depending on the desired reaction time, AV-249 may be doubled.

  • Grouting joints or repairing leaks in concrete structures above or below grade
  • Pipe annulus between slip-liners
  • Block wall
  • Material can be used in wet or dry conditions

  • For use above or below grade in humid or arid atmospheres
  • Fills various cracks and pipe penetrations
  • Stops leaks in concrete structures
  • Designedfor tunnels, mines, dams, reservoirs, block wallsand structures that may shift

  • Expands 400% - 600%
  • Solvent-free system
  • Controllable reaction time by adjusting AV-249 Flexseal AC volume
  • Withstands wet/dry cycles
  • Unique hydrophobic that cures into a flexible, closed-cell foam

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