Armacell Product Selector

ArmaFlex UT

Tube and Roll Insulation

ArmaFlex® UT is Armacell’s newest EPDM-based, closed-cell flexible insulation is especially designed for use on popular Variable Refrigerant Flow (VRF) applications, but also suitable to insulate piping and mechanical equipment for HVAC, chilled water, refrigeration, solar collectors, hot gas, dual temperature, low-pressure steam lines, and can be used on stainless steel over 125°F.

ArmaFlex UT remains flexible up to 300°F, which is the highest max use temperature of any elastomeric insulation in the market. Its closed-cell structure provides excellent condensation control and prevents energy loss. ArmaFlex UT meets 25/50 flame and smoke index as tested according to ASTM E84. Available in tube, lapseal, and roll formats. (Formerly branded as UT SolaFlex.)


EPDM-Based Pipe and Equipment Insulation

Product Advantages

  • Remains flexible up to 300°F – highest max use temperature in the elastomeric market

  • Protection against thermal losses, condensation, and moisture ingress

  • Available in tube, lapseal, and roll formats

Application Areas

  • VRF systems, HVAC systems

  • Refrigeration lines, chilled water piping

  • Solar collectors, hot gas, dual temperature piping

  • Low pressure steam lines

  • Stainless steel over 125°F

  • Commercial, mechanical, industrial, construction


Pipe and equipment insulation for: Variable Refrigerant Flow (VRF), HVAC, chilled water, refrigeration, solar collectors, hot gas, dual temperature, low-pressure steam lines, and can be used on stainless steel over 125°F

Specification Compliance

  • Low VOC, non-halogen, and PVC-free.

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

  • GREENGUARD Gold Certified

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

  • UL 94 recognized V-0, V-1, 5VA (thickness dependent) UL File No. E55798

  • Meets Living Building Challenge requirements

  • All Armacell facilities in North America are ISO 9001 certified


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

  • Inside Diameter, Tubular: 1/4" through 2-1/2" IPS ( 6 mm through 73 mm)

  • Tube Length: 6' (1.83 m)

  • Roll width: 48" (1.22m)

  • Roll Thickness x Length: 1/2" x 70' (13 mm x 21.3 m)

  • Roll Thickness x Length: 3/4" x 50' (19 mm x 15.2 m)

  • Roll Thickness x Length: 1" x 35' (25 mm x 10.7 m)

For complete Specification details, download the product submittal sheet.


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  • 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 4 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, 2014-2024 • 55 Vilcom Center Drive • Suite 200  • Chapel Hill, NC 27514 • tel 800 866 5638