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Adhesives Technology Crackbond JF311 Joint Filler 9 oz

Brand: Adhesives Technology Mfg#: JF311
Product#: 579A9JF311HN
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Crackbond JF311 is a 2-component, rapid curing, elastomeric, polyurea joint filler. It is designed for heavy duty traffic and freezer applications. It is self leveling, low viscosity, solvent free and flexible, allowing 10-15% movement of installed joint width and can be used in temperatures between -40°F to 120°F (-40 to 49°C).


  • Place backer-rod or kiln-dried sand in the crack first to allow slight movement of adhesive from side to side
  • For foot traffic, the maximum joint width is 3/4 in (1.9 cm) and minimum depth can be reduced to 1/2 in (1.27 cm)
  • Used to fill interior/exterior control joints or new construction saw joints on horizontal concrete surfaces
  • Exterior applications when minimal joint movement from thermal cycling will occur
  • Industrial floor applications receiving heavy-duty vehicle traffic, the maximum joint width is 3/4 in(1.9 cm) and joint depth should be a minimum of 3 times the width


  • Brand: Adhesives Technology
  • Product Line: Crackbond
  • Traffic Time: 90 min at 75 deg F
  • Standards: VOC Compliant
  • Odor/Scent: Slight Odor Part A, Slight Amine Part B
  • Shore Hardness: 75 - 80 Shore A
  • Color: Amber Part A, Gray Part B
  • Media: Carbon Dioxide, Foam
  • Tensile Strength: 1200 psi
  • Mixing Style: Nozzle
  • Packing Type: Cartridge
  • Composition: 4,4-Diphenylmethane Diisocyanate Part A, Di Toluene Diamine Part B
  • Form: Liquid Part A, Liquid Part B
  • Resists: Abrasions
  • Mixing Ratio: 1:1
  • Drying Time: 90 min
  • Flammability Rating: 1
  • Special Features: 3 min Gel at 75 deg F, Concrete Gray Mixed
  • Usage: For Heavy Duty Traffic and Freezer Applications