Armacell Product Selector

Tubolit SS

Self-Seal Tube Insulation

Tubolit Self-Seal pipe insulation is an easy-to-install and economical thermal solution from Armacell, the makers of ArmaFlex® and the world’s leading supplier of tubular polyethylene insulation. It reduces heat loss on hot-water plumbing and heat gain on cold-water plumbing systems.

Tubolit pipe insulation is a pre-slit, 25/50-rated, dark gray, closed-cell polyolefin/polyethylene thermal insulation. Its easy-to-use pressure-sensitive adhesive closure helps facilitate installation. It is particularly effective for cost-efficient thermal insulation of domestic heating and plumbing lines. It is expanded without the use of CFC’s, HFC’s or HCFC’s.


Tubolit Self-Seal pipe insulation is an easy-to-install and economical thermal solution from Armacell

Product Advantages

  • Self seal adhesive reduces installation time

  • Available in the most frequently specified pipe sizes and thicknesses

  • Indoor Air Quality: Low VOC, fiber-free, non-particulating, formaldehyde-free insulation

  • GREENGUARD Gold Certified

  • ASTM E 84 25/50 rated

  • Reduces plumbing noise

  • Resists mold and mildew

  • Cost effective

Application Areas

  • Domestic hot and cold water lines

  • Domestic heating and plumbing line

  • Acceptable for use on PEX

    GREENGUARD_UL2818                  USGBC Member


Dark gray flexible polyolefin/polyethylene thermal insulation in tubular form with a self-seal system


  • Wall Thickness (nominal): 3/8” 1/2”, 3/4” and 1” (10, 13, 19 and 25mm)

  • Inside Diameter, Tubular Form: 3/8” to 4” IPS ID (10mm to 114mm ID)

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

Specifications Compliance:

  • MEA 6-02-M ASTM C 1427 Type 1

Approvals, Certifications, Compliances:

  • GREENGUARD Gold Certified

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

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

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.

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