3M 3243-silver_3x50 High Temperature Aluminum Foil Tape Silver 3 Inches X 50 Yards 3.5 Mil 16 Rolls Per Case

Product Description

The 3M 3243-silver_3x50 High Temperature Aluminum Foil Tape is a professional-grade sealing and shielding tape built for demanding industrial and HVAC applications. This tape features a silver aluminum foil backing paired with an aggressive high-temperature solvent acrylic adhesive. The adhesive maintains a strong bond in continuous operating temperatures up to 425 degrees Fahrenheit or 218 degrees Celsius, making it a reliable choice where standard tapes would fail. HVAC technicians, pipefitters, sheet metal workers, and maintenance professionals rely on this type of tape for flue pipe closures, duct sealing, heat shielding, and repair work in environments exposed to extreme heat. The 3.5 mil thickness provides durability and tear resistance while still allowing the tape to conform to curved, uneven, and irregular surfaces without lifting or bubbling. Each roll measures 3 inches wide and 50 yards long, giving tradespeople ample coverage per roll. The case includes 16 rolls, making it well suited for job sites or supply rooms where consistent, high-volume use is expected. The aluminum foil construction delivers high heat reflectivity and strong thermal conductivity, which helps improve heating and cooling efficiency and protects heat-sensitive components nearby. The tape is also rated for resistance to moisture, UV exposure, weathering, and chemical contact, ensuring long-term performance in outdoor and industrial settings including oil and gas refineries and manufacturing facilities. Application is straightforward. The tear-by-hand design eliminates the need for cutting tools on the job, and the easy-release paper liner speeds up installation. This tape carries a UL723 classification with a 0 and 0 flame and smoke rating, meeting the safety standards required for use in commercial HVAC and construction projects.

• High-temperature solvent acrylic adhesive performs continuously up to 425 degrees Fahrenheit or 218 degrees Celsius
• UL723 classified with a 0 and 0 flame and smoke rating for use in commercial and industrial HVAC applications
• Tear-by-hand design with easy-release liner for fast, tool-free installation on curved and irregular surfaces

Product Highlights

The 3M 3243-silver_3x50 is a heavy-duty aluminum foil tape engineered for high-heat environments, offering strong adhesion, moisture and UV resistance, and UL723 certification in a case of 16 rolls for consistent job-site supply.

Product Information

Standard Information

• Brand: 3M
• Manufacturer Part Number: 3243-silver_3x50

Technical Specifications

• Color: Silver
• Width: 3 inches
• Length Per Roll: 50 yards (45.7 meters)
• Thickness: 3.5 mil
• Rolls Per Case: 16
• Maximum Temperature Rating: 425 degrees Fahrenheit or 218 degrees Celsius
• Adhesive Type: High-temperature solvent acrylic
• Backing Material: Aluminum foil
• UL Classification: UL723, 0 and 0 Flame and Smoke Rating
• Applications: Duct closure, flue pipe closure, heat shielding, industrial manufacturing, oil and gas refineries, welding applications