A771 High-Performance Aluminum Foil Sealing Tape – Multiple Widths
A771 Sealing Tape is a heavy-duty, heat- and moisture-resistant aluminum foil tape suitable for HVAC sealing, duct insulation, vapor barrier protection, and general industrial sealing applications. It features a robust aluminum foil backing coated with an aggressive pressure-sensitive adhesive that provides long-lasting adhesion to metal, insulation, and other building surfaces. Ideal for cold/hot environments, this tape ensures durable, tight seals that resist splitting, peeling, and environmental exposure.
• 1.9–2.5 mil aluminum foil backing for high strength and conformability
• Acrylic or rubber-based adhesive—offers instant tack and long-term adhesion
• Operates in temperatures from –20 °F to 200 °F (approx. –29 °C to 93 °C)
• Excellent tear and split resistance—supports tight sealing
• Moisture-, vapor-, and UV-resistant for extended outdoor/indoor use
• Backing conforms to curved ducts and joints—no air gaps
• Ideal for HVAC, insulation, ductwork, roofing, and vapor-barrier sealing
• Width options: 2″, 3″, 4″, and 6″ × 55 yd rolls