
Ideal for sealing rigid, fiberglass ductboard systems and flexible, non-metallic air ducts
Our 3M™ Foil Tape 3340 is constructed using a 2.0 mil aluminum foil backing with a strong, pressure sensitive acrylic adhesive for long-term adhesion, along with an easy releasing poly coated kraft paper liner to protect the adhesive and keep the tape ready for use. The highly engineered aggressive acrylic adhesive performs in both cold and hot temperature conditions.
Recommended Applications
- Heating Ventilation Air Conditioning (HVAC)
- Duct closure
- Vapor seal on reinforced fiberglass duct board
- For use with rigid fiber glass duct board
- For use with flexible air ducts and air connectors
Superb Temperature Resistance
When sealing ducts and other surfaces for heating, ventilation and air conditioning systems, it’s essential to have a strong, long-lasting foil tape that can stand up well to hot and cold temperatures. The 3M™ Foil Tape 3340 has the combination of a foil backing and acrylic adhesive that gives our tape a superb operational temperature range of -40°F (-40°C) to 300°F (149°C). The benefits don’t end there; the foil backing also serves as an excellent barrier against moisture, dust and many chemicals — making it strong, durable and long-lasting. 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 3340 is used in a variety of applications across a number of industries, including: transportation, specialty vehicle, metalworking, construction, automotive, military and government, general industrial, MRO, electronics and aerospace.

3M™ 53797, Flexible Diamond Belt 6451J, 1/2" Dia x 18" L, M125 Micron, Type G, Pattern B2, 7010509272
ACS CX1250 Diamond Belt, 1/2" X 24" 60u
3M 33349, 641WY 1/4" X 24", 220 Mesh Diamond Cloth Belt, 7010534919
Dynabrade 51750 .1 hp Straight-Line Extension Pencil Grinder, Rear Exhaust, 60,000 RPM, 1/8" Collet
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3M 21543, Scotch-Brite Roloc Clean and Strip XT Pro Extra Cut Disc, TR, 2 in x NH, A XCS, 7100179815, 60/box
3M 82596, Hot Melt Adhesive 3762 AE, Tan, 0.45 in x 12 in, 7100023019, 11 LBS/Case
3M 26018, PPS Series 2.0 Adapter, Type S11, 3/8 Male, 18 Thread NPS, 7100135942
3M 17181, Scotch-Brite Roloc Unitized Wheel Pack 987S, 2 in, 7000144150
Standard Abrasives 725012, Buff and Blend Cross Buff HS, A/O Medium, 1-1/2 in x 1/2 in x 2 Ply x 8-3, 7000046830
3M 22409, Roloc Disc 361F, P120 XF-weight, TR, 1-1/2 in, Die R150S, 7000045103
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3M™ 72787, Calibration Kit 529-04-48, Large, 7000052154, 1 EA/Case
3M 33501, Sanding Respirator, 03201, 7000120129, 2 per pack
Dynabrade 95843 Dynabrade Air Lube 10W/NR, 1 Gallon
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3M 15913, Scotch-Brite Roloc Disc High Strength, TR, 2 in X NH A Medium, 7000000710
3M 21463, Marine Adhesive Sealant 5200, White, 5 Gallon Drum (Pail), 7010325698
Dynabrade 51632 .1 hp Straight-Line Pencil Grinder, Central Vacuum, 1/8" Collet
3M™ 72122, Portable Compressed Air Filter and Regulator Panel 256-02-01, 100 cfm, 8 outlets, with Carbon Monoxide Monitor, 7000052147, 1 EA/Case
3M 45699, Cubitron II Hookit Cloth Disc 947A, 40+ X-weight, 3 in x NH, Die 300V, 7100113114
Dynabrade 10690 Filter/Regulator/Lubricator, FRL40, 1/2" NPTAssy.
3M™ 72013, Adapter 529-04-50, 110-120 VAC, 7000131705, 1 EA/Case
Dynabrade 10295 Screen
3M 16615, Accuspray Atomizing Head, Blue, 1.2 mm, 7100086837 (4 Nozzle/Kit)
Air Turbine Tools 310RSV - 6mm Router Hand Tool Series, 25,000RPM, 33421
Standard Abrasives 725008, Buff and Blend Cross Buff HP, A/O Very Fine, 1 in x 3/8 in x 2 Ply x 8-32, 7000046829
3M 01328, PSA Cloth Disc 348D, P180 X-weight, 3 in x NH, Die 300V, 7000045068
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3M 28120, Hookit Clean Sanding Disc 900DZ, 5 in 60 J-weight, Die 500LG, 7010326613
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3M 62816, Adhesive Sealant 760 UV, White, 600 mL Sausage Pack, 7000046609, 12/Case
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Thread, 7100135956 
