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The VYBOND 398S3 is a heavy-duty, cloth-backed duct tape built for demanding trade and jobsite applications. It features a polyethylene-coated cloth backing with a rubber-based adhesive that delivers approximately 50 oz/in adhesion to steel. Total tape thickness is 10 mils, and the roll measures 3 inches wide by 60 yards long. The operating temperature range runs from 40 degrees F to 200 degrees F, making it suitable for environments that see moderate heat exposure. HVAC technicians, sheet metal workers, and general contractors reach for this tape when they need reliable holding power, conformability over irregular surfaces, and a durable bond that holds through normal service conditions.
The 398S3 is well suited for sealing and joining HVAC ductwork seams, wrapping and securing insulation, bundling materials on the jobsite, and handling general-purpose repair tasks where a standard-duty tape falls short. The 3-inch width provides broader seam coverage compared to narrower formats, reducing the number of passes needed on wide duct joints or insulation seams. One roll is included per unit.
Designed for general-purpose use on HVAC ductwork, insulation, and jobsite repair applications where a heavy-duty cloth-backed duct tape is required.
Surface preparation is critical for maximum adhesion — clean and dry all contact surfaces before applying tape. For HVAC ductwork applications, ensure the tape is used within its rated temperature range of 40 degrees F to 200 degrees F; do not use as a substitute for UL 181-listed duct sealing products where code requires rated materials. Apply firm, even pressure along the full length of the tape to ensure complete contact with the substrate.
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