UL 181A-P/B-FX Listed aluminum foil HVAC tape for joining and sealing joints, connections and seams on rigid fiberglass ductboard and flexible air duct.

A tape that "does it all," AF 100 is engineered to form airtight bonds on joints and seams in temperatures ranging from -20 F to 260 F and in humid conditions to deliver full system closure. As a UL 181A-P listed product, AF 100 can be used in place of a mechanical fastener on rigid ductboard.

Save up to 10%* on Home Energy Costs
*When you properly seal and insulate your home. Duck® brand weatherization products are a part of a complete home sealing and insulation solution. Energy savings is an estimate based on U.S. department of energy recommendations for improvements to a ‘typical’ U.S. existing house built between 1970 to 1989. Your actual savings may vary depending on individual factors, including how you seal and insulate your home, the size and age of your home, local energy costs, regional construction styles, and local climate.

Features & Applications


  • UL 181A-P/B-FX listed and printed aluminum foil tape
  • Linered
  • Excellent adhesion to rigid fiberglass ductboard and flexible air duct
  • Flexible and easy to use to create airtight bonds
  • Superior stability during extreme fluctuations in temperature
  • Markets

  • Building & Construction - Abatement/Containment/Restoration
  • Industrial MRO - Facilities Maintenance
  • Building & Construction - HVAC/Insulation
  • Specialty - Made in USA
  • Construction

    Backing: 2 mil, dead-soft aluminum foil


    Adhesive: Acrylic-based adhesive

    Liner: Non-contaminating, siliconized, flat, white, paper release liner


    Properties & Technical Data

    Product Nomenclature: AF 100
    Property Standard Metric
    Adhesion to Stainless Steel 70 oz/in width 7.66 N/10 mm
    Elongation 2% 2%
    Service Temperature Range -20 F to 260 F -29 C to 127 C
    Tensile 25 lbs/in width 43.8 N/10 mm
    Thickness - With Liner 6.8 mils 0.17 mm
    Thickness - Without Liner 4.2 mils 0.11 mm
    Physical and performance characteristics shown above are obtained from tests recommended by PSTC, ASTM, government agencies or Shurtape Technologies, LLC, Quality Assurance and Technical Service departments and do not represent a guarantee of product performance. Individual rolls may vary slightly from these averages. The user should determine whether the product is fit for a particular purpose and is suitable for the user’s method of application before use.


    Sizes & Colors

    Colors Available: Silver Printed (SPT)

    Lengths Available: 60.1 yd

    Widths Available: 2.5 in, 2.83 in

    Sizes and colors disclaimer: Lead times may apply. Please contact Shurtape customer service for information related to stock and non-stock sizes and colors.

    Storage & Usage Conditions

    Tape should be stored in its original packaging in a cool, dry area away from direct sunlight and should be used within 12 months of date of shipment. Surfaces to which tape is applied should be clean, dry and free of grease, oil or other contaminants.

    Applicable Standards

    UL 181A-P
    UL 181B-FX
    UL Listed
    FSI 25/SDI 50
    Tested in accordance with UL 723