1. 3M Canada

3M™ VHB™ Tape, 4646, grey, 2-5/8 in x 36 yd

3M ID 7000143922
  • Durable
  • Smooth, clean appearance
  • High strength
  • Shock absorbing
Impact resistant, Mounting and Trim Attachment, Panel to Frame/Stiffner to Panel Assembly, Seam and Joint Sealing, Semi-Structural Bonding, Small Joint Assembly, Vibration resistant
Application Temperature-Environment
Backing Material
Carrier Material
Acrylic Foam
Core Size (Imperial)
3 in
Design Challenges
Impact & Shock Absorption, Noise Vibration & Harshness Control NVH
Flame Retardant
General Industrial, Metalworking
Maximum Operating Temperature (Celsius)
149 °C
Maximum Operating Temperature (Fahrenheit)
300 °F
Product Form
Set Time
<10 Second
Bare Metal, Glass, HSE Plastics and Glass, Metal, Painted Surface, Easy-to-Bond (HSE), Plastic, Easy-to-Bond (HSE), Rough Surfaces
Substrate 2
Bare Metal, Glass, HSE Plastics and Glass, Metal, Painted Surface, Easy-to-Bond (HSE), Plastic, Easy-to-Bond (HSE), Rough Surfaces
  • Durable
  • Smooth, clean appearance
  • High strength
  • Shock absorbing
  • Even stress distribution
  • Dampens vibration
  • Allows the use of thinner, lighter weight and dissimilar materials

3M™ VHB™ Tape 4646 is a 25.0 mil thick, double-sided, pressure-sensitive, closed-cell acrylic adhesive foam tape used for bonding metals and other high surface energy materials.

3M™ VHB™ Tape is comprised of closed-cell foam with pressure-sensitive adhesive on two sides. This unique combination offers benefits that screws, rivets, welds and other types of mechanical fasteners just can’t match. In many situations they can replace other permanent fasteners. They are made with acrylic foam which is viscoelastic in nature. This gives the foam energy absorbing and stress relaxing properties which provides these tapes with their unique characteristics. The acrylic chemistry provides outstanding durability performance. 3M™ VHB™ Tape 4646 has a general purpose adhesive on both sides of firm foam. It is typically used on metal substrates and has the added feature of high temperature resistance, making it suitable for bonding prior to high temperature paint processing.

Suggested Applications

  • Metal parts prior to paint processing
  • Panel to frame
  • Decorative material and trim
  • Nameplates and logos
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