3M 7000123399 Vhb Tape 4949 Black 45 Mil 0.75 in X 36 Yd

Product Description

The 3M 7000123399 is a double-sided, pressure-sensitive closed-cell acrylic foam tape sold under the VHB Tape 4949 product line. At 45 mil thick, it delivers a firm bond on high surface energy substrates including metals, glass, and many plastics. The tape features a paper liner for handling convenience and provides cushioning, vibration damping, and impact resistance in the bonded assembly. Each roll measures 0.75 inches wide by 36 yards long and ships in black. Maintenance technicians, fabricators, and trade installers use this tape as a structural bonding solution in place of mechanical fasteners, rivets, or welds in appropriate applications.

VHB Tape 4949 is suited for applications that require a long-term, load-bearing adhesive bond between rigid substrates in residential, commercial, and light industrial settings. Common use cases include panel attachment, sign assembly, HVAC equipment nameplates, and general fabrication work where surface energy is high and surface preparation can be controlled. The 45 mil foam core also performs a sealing and gap-filling function in assemblies with minor surface irregularities.

Key Features

• 45 mil closed-cell acrylic foam core provides firm, load-bearing adhesion
• Double-sided pressure-sensitive construction bonds two substrates without mechanical fasteners
• Paper liner protects adhesive surfaces during handling and positioning
• Cushioning and vibration damping properties reduce stress on bonded assemblies
• Black color; roll format at 0.75 inches x 36 yards for practical job-site use
• Bonds high surface energy substrates including metals, glass, and coated surfaces

Compatibility

Designed for bonding high surface energy substrates such as metals, glass, and many painted or coated surfaces. Best results require clean, dry surfaces free of oils and contaminants prior to application.

Installation Notes

Surface preparation is critical — clean the substrate with an appropriate solvent cleaner and allow it to dry fully before applying the tape. Apply firm, even pressure across the full bond area to ensure full contact adhesion; a roller is recommended. Allow adequate dwell time before placing the assembly under load, following the manufacturer guidelines for the specific substrate and temperature conditions. This product is a bonding material and does not require electrical shutoff; follow applicable safety data sheet guidance when handling adhesive products.

Technical Specifications

• Tape Thickness: 45 mil
• Width: 0.75 inches
• Length: 36 yards
• Color: Black
• Construction: Double-sided closed-cell acrylic foam
• Liner: Paper
• Unit of Measure: Roll
• Weight: 1.54 pounds

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000123399