Alu. Foil Tape (FR Grade Class O & UL 723 ASTM E84 Fire Rating)

A nominal 40 micron (1.6 mil) high tensile strength aluminum foil backing, combined with a high performance flame retardant solvent acrylic adhesive, protected by an easy-release silicone release paper.


Aluminum backing provides excellent reflection of both heat and light. High quality adhesive with super strong adhesion and holding power offers reliable and durable Foil-Scrim-Kraft Facing joints and seams sealing in HVAC ductwork application. Low moisture vapor transmission rate makes BondTape AF4025R an excellent vapor barrier. Service Temperature range from -30° to +120°C (-22° to +248°F).


HVAC industry for joining and sealing Foil-Scrim-Kraft Facing laminated fiberglass blanket / duct board joints and seams; joining and sealing flexible air duct seams and connections. May also be used for other industrial uses requiring a tape with these characteristics and benefits.


1. The data above are typical values only, and should not be used for specifications purpose.

2. Tolerance: Weight and Thickness: ±10%; Width: ±3mm; Length: Cut Roll: ±0.3m, Jumbo Roll ±0.5%.


Backing Thickness 40 Micron 1.6 Mil PSTC-133 / ASTM D 3652
Total Thickness 80 Micron 3.2 Mil PSTC-133 / ASTM D 3652
Adhesion to Steel 20 N/25mm 72 Oz./In. PSTC-101 / ASTM D 3330
Tack Rolling Ball 15 cm 6.0 In. PSTC-6 / ASTM D 3121
Tensile Strength 55 N/25mm 12.5 Lb/In PSTC-131 / ASTM D 3759
Elongation 3.00% 3.00% PSTC-131 / ASTM D 3759
Service Temperature -30 ~ +120 °C -22 ~ +248 °F ————
Fire Rating 25 / 50 & Class O 25 / 50 & Class O UL 723 & BS476 Pt. 6 & 7