Armacell Product Selector


Tube Insulation

ProFlex tubes are the economical flexible foam pipe insulation option for HVAC and Refrigeration applications. Its closed cell structure make it a good mechanical insulation choice on chilled-water and refrigeration piping where condensation might otherwise soak through fibrous types of insulation, significantly degrading their thermal performance, leaving them susceptible to fungal growth and ultimately shortening their lifecycle.

Moisture resistant ProFlex provides excellent protection against thermal losses, condensation and moisture accumulation that leads to mold. ProFlex tubes are the economical flexible foam pipe insulation option for HVAC and Refrigeration applications.


The economical elastomeric foam pipe insulation for HVAC and Refrigeration applications

Product Advantages

  • Flexible for easy installation

  • Closed-cell foam structure prevents moisture wicking and eliminates need for additional vapor retarder

  • Fiber free and non-particulating

  • ASTM E 84 25/50 rated

  • Long-lasting, retains thermal integrity over time

Application Areas

  • Refrigeration lines, hot and cold water piping

  • HVAC systems

  • Exposed ceilings / Air plenums

  • Industrial / Mechanical

  • Exterior applications must be protected against radiation


Black, flexible, elastomeric pipe insulation in a tubular form.

Approvals, Certifications, Compliances:

  • Manufactured without CFCs, HFCs, HCFCs, PBDEs, or Formaldehyde.

  • All Armacell facilities in North America are ISO 9001 certified.

Typical Properties

  • Upper Use Limit: 1 220°F (104°C) Tested: ASTM C534

  • Lower Use Limit: 2 -297°F (-183°C)3 Tested: ASTM C534


  • Wall Thickness (nominal) 3/8", 1/2", 3/4", 1" and 1-1/2" (10, 13, 19, 25 and 38 mm)

  • Inside Diameter, Tubular 3/8" ID to 4" IPS (10 mm to 114 mm) except 3/8" wall (1/4" to 3 IPS ID, 6 mm to 89 mm)

  • Length of Sections, Tubular 6’ (1.83m)


Link to the Proflex Tolerances and R-values table here.

For complete Specification details, download the product submittal sheet.


  • ArmaFlex 520 and 520 Black Adhesive – Air-drying, solvent-based contact adhesive for strong bonds and tight seams.

  • ArmaFlex BLV – Black Low VOC Air-drying, solvent-based contact adhesive

  • ArmaFlex WB Finish – Latex-based, UV resistant protective coating for indoor or outdoor applications

  • ArmaFlex Insulation Tape – black foam, pressure-sensitive seam tape

  • Armacell Fabricated Fittings – Made to order pre-fabricated fittings in Tees, Elbows, P-Traps and more

  • Armafix Insulation Pipe Hangers – Easy-to-use insulated pipe hanger supports that protect against compression, up to 1” wall thickness.

Armacell Manufacturing Locations

Did you know?

Armacell has 5 manufacturing facilities in the US and 1 in Canada. That means almost any product you order in North America is made in North America. Some exceptions apply.

Made In USA

© Armacell, 2014-2022 • 55 Vilcom Center Drive • Suite 200  • Chapel Hill, NC 27514 • tel 800 866 5638 • email: