VELOSIT® PU 403

Chemical Resistant 2-Component Hotspray Polyurea Coating

VELOSIT PU 403 is a chemical resistant instant setting protective coating with extraordinary properties. VELOSIT PU 403 shows an enormous flexibility paired with exceptional tensile strength, mechanical and chemical durability make it the ideal coating system for applications with demanding requirements, especially on larger areas. VELOSIT PU 403 is applied with a hotspray coating machine. VELOSIT PU 403 is innocuous once cured and is hence suitable for applications where contact with potable water are required.

Typical applications:

  • Sewage structures
  • Tanks and silos for various chemicals
  • Concrete protection against fuels and oils 
  • Protective coating on secondary containment tanks
  • Coating of biogas tanks
  • Corrosion protection of pipelines
  • Protection against mechanical abrasion 
  • Coating of truck beds

Properties:

  • Extreme flexibility with an elongation at break exceeding 400%
  • Enormous tensile strength (> 20 MPa)
  • Extreme tear strength and impact resistance
  • Waterproof in 2 min.
  • Excellent crack bridging properties under dynamic loads
  • Open to light foot traffic after 15 min.
  • Fully cured in 48 hours
  • Innocuous once cured (surface washing required prior to contact with potable water)
  • Very good adhesion to metal and typical construction substrates like, steel, concrete and masonry (with primer)
  • Excellent resistance against many chemicals such as solvents, alkalis and acids 
  • Wide application spectrum even under extreme temperatures
  • Good weathering resistance (except color stability)

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Technical Data Sheet

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