UL 181B-FX Flexible Duct Closure Tape – 181B Series – 3 mil

Polypropylene Film Acrylic Adhesive – Metalized

Meets UL 181B-FX code for sealing flexible air ducts and air connectors

Conformable and hand tearable. Single ply construction; will not delaminate upon aging. Excellent UV Resistance.

Broad Temperature Range: -40°F to 185°F


Our 181B Series Flexible Duct Closure Tape (Venture Tape 1599B) is a polypropylene film with an acrylic “CW” cold weather adhesive system. This adhesive will perform well in either sub-zero cold or abnormally warm temperatures. Listed with Underwriters Laboratories and meets or exceeds all requirements of UL181B-FX as they relate to closure systems for use with flexible air ducts and air connectors.

Primarily used for sealing flexible air ducts and air connectors.

Item # Roll Size Units / Case Case Size Case Weight
825207 2″ (48mm) x 120 yd 24 – Cello n/a 23 lbs

Technical & Consumer Data

Physical Properties

Total Thickness: 3 mil
Adhesion To Stainless Steel: 41 oz. / in.
Adhesion To Backing: 31 oz. / in.
Shear Indefinite @: 2.2 psi
Hot Shear 150oF Indefinite @: 2.2 psi
Tensile Strength: 22 lbs. / in.
Elongation: 150 %
Temperature Range: -35°F to 260°F
Mold Growth: 0

Physical characteristics shown are averages from tests recommended by our own procedures. A particular roll may vary slightly from these averages. The buyer should determine the suitability for his own use.


Technical Data Sheet

Safety Data Sheet

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