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belzona 5871

Belzona 5871

Anti-corrosion thermal insulation barrier

Belzona 5871 is a  two-component, polymeric, solvent free system providing a thermal insulation barrier with corrosion protection and thermal and sub- zero “cool-to-touch” properties.

This material is designed to be applied to metal pipework, ducting and other industrial equipment. Belzona 5871 is thermally insulating, providing protection against contact-burn injuries, eliminates corrosion/CUI, condensation and anti-icing, improving safety and durability.

Belzona 5871 can be applied by brush, cartridge or plural spray, expanding upon application to produce a lightweight, closed-cell foam. This reduces the surface temperature of metallic substrates to below 60°C (140°F) whilst providing corrosion protection.

Key Benefits

  • Excellent corrosion resistance prevents corrosion and eliminates corrosion under insulation (CUI)
  • Belzona 5871 can be brush or spray-applied, for both small, complex geometries or rapid application over a large area
  • Thermal and sub-zero cool-to-touch properties provide worksite personal protection and safety against contact-burn injuries
  • Expands up to three times the thickness it was originally applied, reducing the numbers of layers needed compared to conventional coating systems
  • Thermal insulation reduces the amount of heat transfer through a surface, increasing the efficiency of equipment
  • Solvent-free system

Applications for Belzona 5871

  • Pipework
  • Ducting
  • Tank/Vessel Externals
  • Industrial machinery and equipment
Key technical data:
Mixing ratio (Base : Solidifier) 2 : 1 by volume
2.3 : 1 by weight
Working life 20 minutes at 20°C (68°F)
Cool-To-Touch Surface (ASTM C1055) Belzona 5871 can be used to prevent contact-burn injuries by reducing the surface temperature of metallic substrates to below 60°C (140°F)
Thermal Conductivity (Lee’s Disc) 0.1 W/m.k
Salt spray resistance (ASTM B117) Belzona 5871 tested as one-coat system (at 3mm cured thickness), cured at 20°C/68°F and post cured at 120°C/248°F respectively, will show no signs of failure after 3000 hours continuous exposure
Corrosion Under Insulation (CUI) Belzona 5871 will show no signs of failure after 1000 hours simulated CUI, cycled between 60°C (140°F) and 120°C (248°F), with alternating, hourly dry and wet periods
Unit size 8 x 0.6 L or 2 x 7.5 L.  Pack sizes may vary locally
Availability* Global


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