Armacell Product Selector

UT SolaFlex

Tube and Roll Insulation

UT SolaFlex Tube and Roll Insulation is a flexible EPDM thermal high-temperature insulation, ideal for solar, VRV/VRF, and stainless steel applications. The closed-cell structure provides thermal conductivity, excellent fire and smoke behavior, low temperature flexibility and excellent protection against heat flow and water vapor diffusion.

UT SolaFlex insulation performs on a broad range of metal pipes and tubing used on solar collectors, refrigeration, hot gas and dual temperature piping, automotive (under hood) and low-pressure steam lines. It is ideal for use as a high-temperature, closed-cell foam insulation for solar collectors.


Elastomeric tube insulation for higher temperatures up to 300°F

Product Advantages

  • Fire Rated: Meets 25/50 flame and smoke index of ASTM E 84

  • Helps Protect Indoor Air Quality: Fiber-free, formaldehyde-free, low VOC

  • Closed-cell structure naturally resists growth of mold

  • Remains flexible at temperatures up to +300°F (+150°C)

Application Areas

  • Solar collectors

  • VRV/VRF piping applications

  • Hot gas piping

  • Automotive (under hood)

  • Low pressure steam lines

  • Painting will minimize surface degradation due to prolonged UV radiation exposure


Black, EPDM-based, flexible, closed-cell elastomeric thermal insulation in tubular and roll form



  • Wall Thickness (nominal): 1/2”, 3/4” and 1” (13, 19 and 25mm)

  • Inside Diameter, Tubular: 1/4” through 2-1/2” IPS

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


  • Width: 48” (1.22m)

Thickness x Length:

  • 1/2” x 70’ (13mm x 21.3m)

  • 3/4” x 50’ (19mm x 15.2m)

  • 1” x 35’ (25mm x 10.7m)

Specifications Compliance:

  • ASTM C 534 Type I (Tubular) Grade 2, Type II (Sheet) Grade 2

  • UL94 5V-A, V-0, File E 55798

Approvals, Certifications, Compliances:

  • GREENGUARD Gold Certified

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

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

Outdoor Use:

  • No UV protection is necessary for performance of the product. However, all elastomeric-based cellular insulation will show surface defects after prolonged exposure to UV radiation. Covering or a protective coating, such as WB Finish, will minimize these defects if installed outdoors.


Link to the UT SolaFlex Tolerances and R-values table here.

For complete Specification details, download the product submittal sheet.


  •  HT 625 Adhesive – Specifically designed for temperatures up to 350°F (175°C).

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, 2014-2023 • 55 Vilcom Center Drive • Suite 200  • Chapel Hill, NC 27514 • tel 800 866 5638