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
• 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 • UL 181B-FX Listed - clearly printed on the tape for quick identification • Linered • Instant, water-resistant grip to most surfaces • Paintable with paint recommended for aluminum • Contains no asbestos, CFCs or PCBs • Overall Grade/Function: UL 181B-FX Listed mastic duct sealer • Backing: Printed, 2 mil aluminum foil • Adhesive: Non-flammable, butyl rubber • Tensile Strength: 23.8 lbs./in width 41.7 N/10 mm • Adhesion to Stainless Steel: 111 oz/in width 12.15 N/10 mm • Thickness: 17 mils 0.43 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
