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3M™ Foil Tape 3340 Silver, 72 mm x 45.7 m 4.0 mil, 16 rolls per case

3M ID  70006742442    UPC#  00051115643248    Part Number  3340    3M Product Number  3340     
3M(TM) Foil Tape 3340 UL181A-P Roll Image
3M(TM) Foil Tape 3340 UL181A-P Roll Image
3M™ Foil Tape 3340 Silver, aluminum foil backing and a pressure sensitive acrylic adhesive and paper liner. UL181A-P/B-FX Listed.
  • Meets requirements of UL 181A-P and UL 181 B-FX (file MH21296).
  • Duct closure tape is specifically designed for use as a vapor seal on reinforced fiberglass duct board.
  • Best adhesion results attained when applied to clean dry surfaces above 32°F (0°C).
  • Foil backing printed with UL label approval.
  • Masking, sealing, seaming, shielding, harness wrapping, joining, vibration damping, electroplating, plastic protection, chemical milling, heat shielding, heat reflecting, paint stripping
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3M™ Foil Tape 3340 is ideal for sealing rigid fiberglass duct boards and flexible(non-metallic) air duct and connector systems. UL 181 AP and UL 181 B-FX Listed.


Adhesion to Steel oz/in (N/100 mm)30 (33)
Adhesive TypeAcrylic
ApplicationsSealing HVAC & Duct Work
Backing MaterialAluminum Foil
Backing Thickness2 mil
Backing Thickness (metric)0.05 mm
IndustriesTransportation, Specialty Vehicle, Metalworking, Construction, Automotive, Military & Government, General Industrial, MRO, Electronics, Aerospace
Length49.97 Linear Yard
Length (Metric)45.7 m
Liner TypePaper
Meets SpecificationsUL 181A-P, UL 181B-FX
Operating Temperature Range (Celsius)-34 to 121 Degree Celsius
Operating Temperature Range (Fahrenheit)-30 to 250 Degree Fahrenheit
Product FormRoll
Tensile Strength lb/in (N/100 mm)20 (350)
Total Thickness4 mil
Width2.83 Inch
Width (Metric)72 mm