Loctite® 495 Cyanoacrylate Adhesive

Loctite 495 Cyanoacrylate Adhesive: Versatile instant adhesive for plastics, metals, and rubbers

Loctite 495 bonds in seconds, without the need for heat or mixing. An instant adhesive designed for the workshop and industry.

Formulated with ethyl cyanoacrylate, it is suitable for plastics, metals, rubbers, and elastomers, even in mixed assemblies.

Its very low viscosity allows it to penetrate micro-gaps and ensure a thin, uniform film, even on tight-fitting parts.

At Dagobert Industrie, we offer it to professionals seeking reliable, rapid bonding without complex procedures.

What is Loctite 495 cyanoacrylate adhesive?

Loctite 495 is an instant cyanoacrylate adhesive developed by Henkel. It bonds in seconds without heat or solvents on a wide range of materials.

It is a benchmark adhesive for industry and workshops. It is used to assemble plastic, metal, rubber, or elastomer parts quickly and durably.

Composition and polymerization mechanism

Loctite 495 is formulated with ethyl cyanoacrylate. It is a highly reactive liquid monomer.

Polymerization is triggered by contact with ambient moisture, even in minute amounts, present on the surfaces to be bonded. An activator is not needed in most cases.

The reaction is anionic and extremely fast: the bond reaches handling strength in 10 to 30 seconds, depending on the substrate and humidity conditions.

The result is a rigid, transparent bond with high shear strength. The adhesive handles light vibrations and moderate mechanical stress well.

At Dagobert Industrie, we offer Loctite 495 for professionals who need reliable, fast bonding without complex procedures.

Technical properties and performance of Loctite 495

Loctite 495 is a single-component, instant-curing cyanoacrylate adhesive. It hardens in seconds upon contact with ambient moisture, without any mixing or special equipment.

Its viscosity is low (approximately 5 mPa·s), which allows it to spread as a thin film and penetrate into micro-gaps. Ideal for tight assemblies with low clearance.

It adheres to a wide range of materials: plastics, metals, rubbers, elastomers, and porous materials. This is its main advantage over more specialized grades.

Shear strength on steel reaches approximately 20 MPa. On rubber, the cohesion of the substrate is often reached before the bond fails.

Operating temperature range: -55 °C to +80 °C. Beyond this, one should look to high-temperature grades such as Loctite 480 or Loctite 4851.

Product	Viscosity (mPa·s)	Thermal resistance	Target materials	Strength
Loctite 495	~5	up to +80 °C	Plastics, metals, rubbers	Versatility, thin film
Loctite 406	~20	up to +80 °C	Difficult plastics, elastomers	Adhesion on PE, PP with primer
Loctite 480	~800	up to +120 °C	Rubbers, metals	Shock and vibration resistance
Cyberbond 2035 (Cyberbond)	~50	up to +80 °C	Metals, plastics	Intermediate viscosity

Loctite 495 is distinguished by its very low viscosity: it is suitable for assemblies requiring capillary penetration, where a more viscous grade would remain on the surface.

Compatible materials and areas of application

Loctite 495 effectively bonds a wide range of materials. It excels on plastics, metals, rubbers, and elastomers.

It is particularly well-suited for mixed assemblies, for example, metal to rubber or rigid plastic to flexible elastomer.

Here are the families of compatible materials:

• Plastics: ABS, polycarbonate, PVC, acrylic
• Metals: steel, aluminum, brass, copper
• Rubbers and elastomers: EPDM, neoprene, nitrile
• Ceramic and glass (non-porous surfaces)

Typical industrial use cases

In the workshop, Loctite 495 is used to fix gaskets, rubber tips, or lightweight plastic parts when no disassembly is planned.

It is common in electronics and wiring: bonding connectors, securing wires, and fixing small components to housings.

In industrial maintenance, it allows for quick repairs on damaged rubber parts or cracked plastic covers.

It is less suitable for assemblies exposed to high mechanical shear stress or continuous temperatures above 80 °C. For those cases, a structural adhesive such as Loctite EA 3430 (two-component epoxy) will be more appropriate.

Loctite 495 vs. other cyanoacrylate adhesives: comparison table

Loctite 495 is a versatile cyanoacrylate adhesive, but it is not the only one on the market. Here is how it positions itself against other common references.

Product	Viscosity	Compatible materials	Temperature resistance	Strength
Loctite 495	Low (liquid)	Plastics, metals, rubbers	Up to 80 °C	Fast polymerization, high versatility
Loctite 406	Low	Difficult plastics, elastomers	Up to 80 °C	Specialized for inert plastics (PP, PE)
Loctite 480	Medium	Rubbers, metals	Up to 80 °C	Improved shock resistance
Loctite 401	Low	Porous materials, wood, paper	Up to 80 °C	General purpose, porous surfaces
Cyberbond CB 2050 (Cyberbond)	Low	Metals, plastics	Up to 70 °C	Economical entry-level
Permabond 910 (Permabond)	Low	Metals, rigid plastics	Up to 82 °C	Robust industrial alternative

Loctite 495 stands out for its material versatility and fast setting time. It is suitable for most common assemblies without a primer.

Loctite 406 takes over for difficult-to-bond plastics such as polypropylene or polyethylene. Loctite 480 is preferable if the assembly is subject to shocks or vibrations.

For porous surfaces or wood, Loctite 401 remains more suitable. At Dagobert Industrie, we offer these different references to help you choose the right adhesive for your application.

Usage advice and safety precautions

Loctite 495 is simple to use, but a few best practices make the difference between a solid bond and a disappointing connection.

Prepare the surfaces first. They must be clean, dry, and degreased. A cloth dampened with acetone or isopropanol is sufficient in most cases.

Apply a thin, uniform layer to only one of the two surfaces. Too much adhesive slows polymerization and weakens the bond. One drop for a few cm² is often sufficient.

Assemble immediately after application. The initial setting time varies from a few seconds to a minute depending on the materials and ambient humidity. Hold the parts in contact without moving them during this time.

Maximum strength is reached after 24 hours. Avoid mechanical stress before this delay.

Essential precautions:

• Work in a well-ventilated space: cyanoacrylate vapors irritate the eyes and respiratory tract.
• Wear nitrile gloves: the adhesive adheres instantly to the skin.
• In case of accidental skin bonding, do not pull. Soak in warm soapy water or use a suitable remover.
• Keep the bottle closed and away from heat and moisture to preserve the shelf life of the product.
• Keep out of reach of children.

On porous or absorbent plastics like wood or leather, a very small quantity is enough: these materials accelerate setting, and the adhesive penetrates quickly.

FAQ - Loctite 495

1. What is the difference between Loctite 495 and Loctite 404?

Loctite 495 is a general-purpose cyanoacrylate adhesive, optimized for plastics, metals, and rubbers. Loctite 404, however, is formulated for difficult-to-bond surfaces, particularly low surface energy plastics such as polyethylene or polypropylene.

If you are bonding common parts in a workshop, 495 is sufficient. For recalcitrant substrates, look toward 404.

2. Is Loctite 495 resistant to water and solvents?

Once polymerized, Loctite 495 is water-resistant and resistant to most aqueous fluids. However, it is sensitive to polar solvents like acetone, which can weaken the bond.

For prolonged exposure to aggressive solvents, an epoxy or structural adhesive will be more suitable.

3. On which substrates does Loctite 495 not work well?

495 gives poor results on:

• Low surface energy plastics (PE, PP, PTFE)
• Greasy, damp, or contaminated surfaces
• Wide gaps (clearances greater than 0.1 mm)
• Highly porous substrates without a suitable primer

Careful degreasing remains essential before any application to ensure the strength of the bond.

4. What is the setting time and the full curing time?

The handling time varies from 5 to 60 seconds depending on the substrate and ambient humidity. On rubber, setting is almost immediate.

Full curing is reached in 24 hours. During this time, avoid significant mechanical stress on the assembly.

5. How should Loctite 495 be stored correctly?

Store the bottle in a cool, dry place away from light, ideally between 2 °C and 8 °C to maximize shelf life. At room temperature, the shelf life is approximately 12 months for an unopened bottle.

After use, carefully wipe the nozzle before closing the bottle. A clogged nozzle or premature polymerization are the main causes of product loss.