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Item # A790, Duct Insulation Sealing Foil Tape (Aluminum)

Image A virtually wrinkle free, hand applied, 2 mil dead soft aluminum foil backed tape, #790, is a duct board system tape designed to seal aluminum backed ducts and duct insulation. It can be applied to smooth and scrim surfaces, resists normal temperatures, water vapor, odor and smoke transmission, has excellent shelf life and indefinite product life after application. #790 can be printed for permanent labels, used for lane marking and for temporary repairs on steel and aluminum truck bodies, mufflers and metal containers.

Specifications shown below are averages obtained from tests recommended by PSTC, ASTM, Government Agencies or Quality Control and Technical Service Department. Individual rolls may vary slightly for these averages.



Aluminum foil backing with a high tack, natural rubber adhesive wound with a noncontaminating silicone release liner.




HVAC Sealing, seaming, sheet metal duct, rigid insulation and duct wrap


4 mil

Tensile Strength

17 lb/in width


3 %

Tear Resistance


Adhesion to Stainless Steel

150 oz/in width

Adhesion to Backing

150 oz/in width

Holding Power to Stainless Steel (min.)

10000 + oz/in width

Temperature Range

0 to 175 ºF

Popular Size

2 in


24 rolls/case

Standard Length

50 yd

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