Foil, Film & Foam Tapes

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.

Where To Buy Data Sheet

Features & Applications

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

ShurMASTIC® Butyl Foil Tape: SF 686

Specifications

Learn more about SF 686 in depth by exploring all of its features and uses. You can also visit TapeUniversity.com to learn more about choosing and using tapes.

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Markets

Building & Construction - HVAC/Insulation

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Construction

Backing: Printed, 2 mil aluminum foil

Adhesive: Non-flammable, butyl rubber adhesive

Liner: NA

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Properties & Technical Data

Product Nomenclature: SF 686

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.

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Downloads

Technical Data Sheet
Sales Sheet
Safety Data Sheet
Infographic
Regulatory Compliance Letter
HVAC Pro Guide

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Sizes & Colors

Colors Available: Silver Printed (SPT)

Lengths Available: 100 ft

Widths Available: 2 in, 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.

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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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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

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Where to Buy

Shurtape Foil, Film & Foam Tapes products are available both online and at retailers nationwide. Check our Where to Buy page for more information on purchasing Shurtape products both locally and online.