Armacell Product Selector

ProFlex LapSeal

Tube insulation with reinforced lap seal

Flexible elastomeric pipe insulation with a lap seal for greater seam security and increased protection against condensation, mold and energy loss. For added security, the low-profile lap seal ensures the longitudinal seam stays closed and looks neat. It’s the ideal solution for speeding up install times or making hard-to-reach installation areas easier to accommodate.

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.


The economical elastomeric foam lap seal pipe insulation for HVAC and Refrigeration applications

Product Advantages

  • Angled cut with more surface area for a better bond

  • A single interior adhesive liner for quicker application

  • Durable, low-profile lap seal with wider release tab, stays closed and looks neat

  • Easy to install – an excellent choice for retrofit applications

  • 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", 1", 1-1/2", 2" (10, 13, 25, 38, 50 mm)

  • Inside Diameter, Tubular 3/8" ID to 4" ID (10 mm to 114 mm) except 3/8" wall (5/8" to 2 1/8" ID) (19 to 57 mm)

  • Length of Sections, Tubular 6’ (1.8m)

For complete Specification and R-value details, download the product submittal sheet.


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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: