3M VHB Crystal Clear

Q: What is the difference between VHB 4910 and 020F, and which one should I choose?

The main difference is the thickness. 4910 is 1.0 mm thick, which compensates for irregular surfaces and accommodates the expansion/contraction of dissimilar materials well. It's suitable for glass, acrylic, and signs. 020F is 0.2 mm thick, ideal for smooth surfaces requiring a very thin, flush bond line, such as keypads and nameplates.

Q: Can it be removed and reused?

Not recommended. Once removed, the bond strength decreases significantly. You should clean the surface and use a new piece of tape every time to achieve the specified bond strength.

3M VHB Clear tape bonding glass and acrylic panels, creating nearly invisible bond lines

Transparent Structural Bonding Technology

3M VHB
Clear Series

Clear acrylic adhesive tape that bonds glass, acrylic, and metal with structural strength, leaving no visible screws or adhesive residue.

Virtually invisible bond lines
UV resistant, non-yellowing
Replaces screws and liquid adhesives

View Products Consult Technical Team

Series Thicknesses

0.2 mm and 1.0 mm

Adhesive Material

Solid Clear Acrylic

Outdoor Use

UV resistant, non-yellowing

Services

Custom slitting & die-cutting

Quick Selection

What is your application?

Both models use the same adhesive material. The difference is the thickness, which should be selected based on the surface material and component size.

If your application is:

Perfectly smooth on both sides, small components, requiring the thinnest possible bond line.

Use VHB 020F (0.2 mm)If your application is:

Glass, acrylic, large panels, or dissimilar materials with different expansion rates.

Use VHB 4910 (1.0 mm)

Still unsure? Read our detailed thickness selection guide, or send a photo of your workpiece to our technical team via LINE.

Products

Both 3M VHB Clear Models

Order directly via LINE. Our team will confirm stock, pricing, and roll sizes in the chat.

Roll of 3M VHB 4910 clear tape, 1.0 mm thick

Clear Acrylic 1.0 mm

3M VHB 4910 Double-Sided Clear Tape

3M™ VHB™ Tape 4910 Clear Structural Bonding

PART NO. 4910

Thickness1.0 mm Clear

Key FeatureStructural strength, compensates for irregular surfaces, non-yellowing

SurfacesGlass, acrylic, polycarbonate, smooth metal

ApplicationsDisplay cases, acrylic signs, furniture glass doors

Order online via LINE View Product Details

Roll of 3M VHB 020F clear tape, ultra-thin 0.2 mm

Clear Acrylic 0.2 mm

3M VHB 020F Ultra-Thin Double-Sided Clear Tape

3M™ VHB™ Tape 020F Ultra Thin Flush Bonding

PART NO. 020F

Thickness0.2 mm Clear

Key FeatureFlush bond line, high initial tack

SurfacesSmooth metal, engineering plastics (PC, ABS), glass

ApplicationsKeypads, touch screens, nameplates

Order online via LINE View Product Details

Thickness and properties refer to 3M Technical Data Sheets by part number. For strip or die-cut requests, use our custom tape cutting service

Why VHB Clear?

Structural strength, yet invisible bond lines

The tape consists of a solid clear acrylic core with no carrier, allowing it to bear loads through its entire thickness while maintaining the complete transparency of the materials.

Structure of 3M VHB 4910 tape, solid clear acrylic core

Clear bond line, no drilling

No visible screw heads, ensuring a clean and sleek design.

Non-yellowing under sunlight

Adhesive remains clear even with continuous UV exposure.

Absorbs shock and expansion

Viscoelastic core flexes with materials during temperature changes.

Seals against water and air

Bonds and seals joints in a single step.

Distributes stress evenly

No concentrated stress points, reducing the risk of glass cracking.

Strong bond on high surface energy materials

Glass, acrylic, stainless steel, aluminum.

Application Examples

Most Common VHB Clear Applications

Acrylic and glass display cases bonded with clear tape

Display Cases and Retail Displays

Bonds clear acrylic and glass without adhesive residue. Shelves look premium and seamless.

Recommended Model: VHB 4910

Glass partition walls bonded using Panel Bonding

Decorative Glass and Architectural Works

Bonds glass partition panels, accommodates thermal expansion, and seals against water, replacing mechanical fasteners.

Recommended Model: VHB 4910

Electronics and Illuminated Signs

Bonds control panels and LED signs. Transparency does not block light, withstands accumulated heat.

Recommended Model: VHB 020F

Thickness Selection Guide

Why is Tape Thickness Important?

Thickness does not indicate high or low bond strength; instead, it determines how well the tape will fully contact the material surface and how much material movement it can accommodate. These two factors are the main reasons why glass and acrylic bonding fails.

Principle 1: Surface Wet-out

Bond strength comes from the actual area where the adhesive touches the surface. Surfaces that look smooth to the naked eye still have microscopic curves, warps, or waves. A thin tape will only touch the high points and leave air gaps in the low points. A thicker tape has enough viscoelastic mass to flow into and fill these gaps, thus providing a larger actual bonding area.

0.2 mm tape on an irregular surface

Adhesive touches only high points, reducing actual load-bearing area.

1.0 mm tape on an irregular surface

Tape flows into low points, contacting almost the entire surface.

Top material Tape core Air gap Bottom material surface

Principle 2: Shear Stress from Material Expansion

When temperatures change, dissimilar materials expand and contract at different rates. The differential movement (ΔL) becomes shear stress in the tape layer. Shear strain is calculated by ΔL ÷ Tape Thickness. For the same ΔL, a thicker tape results in lower strain in the adhesive core.

Calculation Example

A 1 m aluminum panel bonded to glass, temperature change of 40°C
Coefficient of thermal expansion: Aluminum approx. 23×10⁻⁶/°C, Glass approx. 9×10⁻⁶/°C

ΔL ≈ (23 − 9)×10⁻⁶ × 1,000 mm × 40°C ≈ 0.56 mm

On 0.2 mm tape, shear strain is approx. 280%. On 1.0 mm tape, it is approx. 56%.

0.2 mm tape when material shifts by ΔL

Thin tape layer must skew significantly, resulting in high strain.

1.0 mm tape when material shifts by the same ΔL

Thick tape layer distributes the skew, resulting in approx. 5 times lower strain.

Diagram scales are exaggerated for illustration. Numbers are sample calculations. Actual designs should refer to 3M Technical Data Sheets and consult engineers.

Selection Criteria Summary

Comparison of Selection Criteria between VHB 020F and VHB 4910
Criteria	VHB 020F 0.2 mm	VHB 4910 1.0 mm
Surface Texture	Perfectly smooth, flat on both sides	Smooth, up to slight curves or waves
Bonding Materials	Similar materials, or similar expansion rates	Dissimilar materials, e.g., glass and aluminum
Component Size	Small parts, short bond lines	Large panels, long bond lines
Bond Line Profile	Virtually no gap between parts	1 mm gap, visible as a thin clear line
Example Applications	Keypads, nameplates, touch screens	Display cases, acrylic signs, glass doors

Safety Considerations

Overhead glass installations, large outdoor signs, or Structural Glazing require engineering design and bond strength testing prior to use, along with standard secondary mechanical fasteners. Glass applications exposed to continuous moisture should use an adhesion promoter (Primer) as recommended by the manufacturer. Request TDS and test samples

Additional Information

How to install for maximum bond strength (4 steps)

Based on 3M VHB tape installation guidelines. Most bonding failures are due to improper surface preparation and pressure.

Clean the surface: Wipe both surfaces with a 50:50 isopropyl alcohol and water solution and let completely dry. Surfaces must be free of dust, oil, or silicone.
Install at the proper temperature: Recommended range is 21–38°C. Do not install below 10°C as the adhesive will not fully wet out on the surface.
Apply firm, consistent pressure: Use a roller or apply consistent pressure of approx. 15 psi (~1 kg/cm²) to ensure full adhesive contact with the surface.
Wait for full bond strength: Bond strength reaches ~50% in 20 minutes, ~90% in 24 hours, and fully cures in 72 hours. Avoid applying full load before this time.

Frequently Asked Questions (FAQ)

What is the difference between VHB 4910 and 020F, and which one should I choose?

The main difference is thickness. 4910 is 1.0 mm thick, compensating for irregular surfaces and accommodating dissimilar material expansion well; ideal for glass, acrylic, and signage. 020F is 0.2 mm thick, suitable for flat surfaces requiring a thin, flush bond line like keypads and nameplates.

Can it be used outdoors in direct sunlight?

Yes. The acrylic adhesive is highly resistant to UV and weather, preventing yellowing or cracking over long-term use. For large outdoor architectural projects, design the bond line to avoid water pooling and consult our technical team prior to installation.

Can it be removed and reused?

Not recommended. Bond strength drops significantly once removed. You should clean the surface and use a new piece of tape every time to ensure specified strength.

Can it bond to PP or PE plastics?

PP and PE are low surface energy plastics. The Clear series will not bond optimally without an adhesion promoter (Primer). We recommend sending your material details to our technical team for assistance in selecting a better model.

Can it be custom cut to specific widths or sizes?

Yes, we offer tape slitting and die-cutting services to your desired dimensions. This minimizes waste and speeds up on-site installation.

WeTapeStore Product & Service Standards

Genuine 3M Products with Technical Data Sheets provided.
Technical Team Assistance to select the right model based on materials, weight, and actual usage conditions.
Test Samples Available prior to bulk ordering.
Custom Cut to Size via our tape slitting and die-cutting service