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Foil, Film & Foam Tapes

SF 686

SF 686 UL 181B-FX Listed/Printed ShurMASTIC® Butyl Foil Tape

ShurMASTIC® butyl foil tape used for airtight and moisture-free sealing of Class 1 Flex Duct, sheet metal and duct wrap vapor barriers, and is also approved for subgrade application on PVC-coated duct. A paintable, UL 181B-FX Listed mastic on a roll for indoor or outdoor use, SF 686 is designed with a butyl rubber adhesive system that can withstand wide temperature variances once applied.

Features & Benefits

  • Indoor/outdoor mastic foil tape
  • UL 181B-FX Listed - clearly printed on the tape for quick identification
  • Instant, water-resistant grip to most surfaces
  • Paintable with paint recommended for aluminum
  • Contains no asbestos, CFCs or PCBs
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AF 099

Aluminum foil HVAC tape that's UL 181A-P/B-FX Listed for use on rigid fiberglass ductboard and flexible air duct.

SF 685

ShurMASTIC® indoor/outdoor roll mastic tape for sealing sheet metal and PVC-coated duct.

AF 100

UL 181A-P/B-FX Listed aluminum foil tape for use on rigid fiberglass ductboard and flexible air duct.

Typical Applications

  • For airtight and moisture-free sealing of Class 1 Flex Duct, sheet metal and duct wrap vapor barriers
  • Also approved for subgrade application on PVC-coated duct



  • Backing: Printed, 2 mil aluminum foil
  • Adhesive: Non-flammable, butyl rubber adhesive
  • Liner: NA

Properties & Technical Data

Property Standard Metric
Adhesion to Stainless Steel 111 oz/in width 12.15 N/10 mm
Application Temperature Range 35 F to 110 F 1.7 C to 44 C
Service Temperature Range -20 F to 200 F -29 C to 93 C
Tensile 23.8 lbs/in width 41.7 N/10 mm
Thickness 17.0 mils 0.43 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.

Applicable Standards

UL 181B-FX, UL Listed, Pressure Classes SMACNA 1/2, 1, 2, 3, 4 & 6, Seal Classes A, B, C, Tested in accordance with UL 723, FSI 5/SDI 25

Sizes & Colors

Colors Available:

Silver Printed (SPT) Silver Printed (SPT)

Lengths Available: 30.48 m

Widths Available: 50.8 mm, 76.2 mm

Standard Core Size: 3 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.

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Where to Buy

Shurtape Foil, Film & Foam Tapes products can be found online or nationwide at the following preferred retailers. Check our Where to Buy page for more information on where to buy Shurtape products.

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