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3M VHB® 20 mil Clear Acrylic

General Information
4905 is a 20 mil VHB double coated, clear solid acrylic . The general purpose adhesive bonds to most higher surface energy substrates including metal, glass and high surface enegy plastics. In many cases it can replace rivets, spot welds, liquid adhesives or other permanent fasteners.
Backing Adhesive
Liner Type
Acrylic Foam Acrylic 20.00 mil Polyethylene (5 mil red)
Adhesion to Steel
180° Peel
adhesion to steel 180° peel - liner side Tensile Strength Elongation Percent
192.00 oz/in 192.00 oz/in 100.00 lbs/in  
Min Application
Min Service
Max Short-Term
Max Long-Term
50 °F -31 °F 200 °F 300 °F
Adhesive Tape Features
  • Solid acrylic material providing excellent clarity
  • Adhesive bonds well to most higher surface energy substrates including metal, glass, and high surface energy plastics
  • Viscoelastic acrylic gives foam energy absorbing and stress relaxing properties
  • Outstanding durable performance
  • UL746C recognized
  • Excellent solvent and moisture resistance
  • Resistance to brief chemical exposure
  • Excellent for applications where clear or colorless material is desired
Adhesive Tape Applications
  • Joining transparent material
  • Seal skylight inner & outer dome
  • Mount back lit translucent signs
  • Edge bond resin filled glass
Adhesive Tape Markets Served
  • Glass Manufacturing
  • Construction
  • Commercial printing
  • Point of Purchase
Adhesive Tape Colors
  • Clear
Comparable products
Backing Adhesive Thickness Adhesion
 Acrylic Foam   Acrylic   20.00mil   192.00oz/in 

The physical properties listed are typical values and are not to be considered as specifications. Our suggestions for use are based on tests we believe to be reliable. However, the purchaser must carry out their own tests to determine the suitability of the product for their internal use. Information is given in good faith, but without warranty.

It is essential, as with all pressure-sensitive tapes, that the surface to which the tape is applied be clean, dry and free of grease and oil.

Shelf life from date of manufacture is based on the product being stored at 70°F(21°C) / 50% relative humidity out of direct sunlight.

Specification compliance is dynamic and should only be used as a general guide. Always confirm that the tape you are interested in currently complies with all specification requirements. Please verify that the product number that you select is available in the proper size and color to meet your specification.

Choose the surface energy of the exact surface that the adhesive will contact (e.g. if the part was painted metal, paint would be the surface energy).