3M Foil Tape 3340-D, Silver, 2 1/2 in x 10 yd, 3.9 mil

9 rolls

    2.0 mil aluminum foil backing is ideal as a vapor seal tape for duct closure

    Listed for both UL181A-P and UL181B-FX

    Replaces mechanical fasteners for rigid duct board

    Thermally conductive backing helps heating and cooling efficiency

    Permanent acrylic adhesive combined with the durable 2.0 mil backing provides long service life

The 3M™ Foil Tape 3340 is ideal for sealing rigid fiberglass duct boards and flexible air duct systems. Our tape meets requirements for UL 181 A-P and UL 181 B-FX Listings as a measure of reliability and quality standards.

• 3M 3340 Foil Tape is a high temperature, high strength aluminum foil tape coated with a cold weather acrylic pressure sensitive adhesive. This tape is constructed using a 2.0 mil aluminum foil backing with a strong, pressure sensitive acrylic adhesive for long-term adhesion, along with for releasing poly coated kraft paper liner to protect the adhesive and keep the tape ready for use. The aggressive acrylic adhesive performs in both cold and hot temperature conditions.
• An essential requirement for sealing ducts and other surfaces for heating, ventilation and air conditioning systems is foil tape that can stand up to hot and cold temperatures. The foil backing of 3M 3340 serves as an excellent barrier against moisture, dust, and many chemicals. The very low moisture vapor transmission rate makes the tape a good sealant and the acrylic adhesive supplies superior temperature and UV resistance to give you a strong, lasting, and reliable bond.
• 3M Foil Tape is used in industries such as transportation, metalworking, construction, automotive, military and government, general industrial, electronics, aerospace, and more.
• Product applications include high-performance duct closures, high strength aluminum foil backing is ideal for rigid duct board and flexible duct, vapor seal on reinforced fiberglass duct board, excellent for hot and humid conditions, excellent performance and durability in any weather conditions, cold weather adhesive, and no special tools or process required for application.
• Standards Met: UL181A-P and UL181B-FX listed; Type of Adhesive: acrylic; Type of Backing: high-strength aluminum foil; Type of Liner: poly coated kraft paper; Core: 3-inch diameter; Thickness: 3.9 mils (total), 2 mils (backing); Adhesion to Stainless Steel: 60 ounces per inch; Strength: 29 pounds per inch (longitudinal); Operating Temperature Min-Max: -40F-300F; Elongation: 10%; Color: natural aluminum