Loctite 498 Instant Adhesive 20g

Loctite 498 Super Bonder Instant Adhesive is a high-temperature, transparent to pale yellow ethyl cyanoacrylate instant adhesive engineered for maximum efficacy in high-performance bonding. This industrial-grade adhesive permanently bonds components, preventing costly structural failures and component shifting caused by thermal cycling and intense vibration. Whether you are securing close-fitting electronic assemblies or rugged industrial machinery parts, this premium instant liquid adhesive provides a robust, impact-resistant seal on all materials—including difficult-to-bond plastics, rubbers, and metals.

Why Choose Loctite 498 Thermal Cycling Resistance?

• Thermal Cycling Resistance: Specially formulated to withstand continuous temperature fluctuations without cracking or losing bond strength.
• Superior Humidity Tolerance: Exhibits excellent resistance to moisture and humid environments, preventing premature bond degradation.
• Multi-Substrate Versatility: Engineered to provide exceptional high-shear adhesion across metals, rubbers, and most engineered plastics.
• Medium Viscosity Flow: Featuring a 500 mPa.s viscosity, it provides controlled application flow without excessive running, making it ideal for precision placements.
• High Temperature Limits: Maintains strong mechanical integrity across an impressive operational temperature range of -65°F to 180°F (-54°C to 82°C).

Technical Specifications

• Product Type: Ethyl Cyanoacrylate Liquid Adhesive
• Strength: High (3,000 psi shear strength on grit-blasted steel)
• Color: Translucent / Pale Yellow
• Container Size: Standard Industrial Size
• Curing Type: Ambient Atmospheric Humidity

Simple Application Instructions

1. Clean: For optimal results, clean all internal and external mating surfaces with a Loctite cleaning solvent to remove residual oil, grease, or debris, and allow to dry.
2. Apply: Apply several drops of the liquid ethyl cyanoacrylate adhesive directly to one of the bond surfaces.
3. Assemble: Assemble, align, and firmly press the parts together immediately. The formula will begin curing rapidly once exposed to atmospheric humidity between the tight-fitting surfaces.

Frequently Asked Questions (FAQ)

What is Loctite 498 used for?

Loctite 498 is a high-temperature instant adhesive designed for general-purpose bonding. It is specifically formulated to prevent parts from loosening or failing due to thermal shock, continuous heat exposure, and high-vibration conditions.

Can Loctite 498 be disassembled?

No, it creates a permanent bond under normal operating conditions. To disassemble components, you must apply localized heat exceeding its maximum temperature rating or utilize specialized cyanoacrylate removal solvents like nitromethane or acetone to dissolve the cured polymer matrix.

Does Loctite 498 work on metals and plastics?

Yes. Loctite 498 offers robust performance across a vast array of materials. It is highly effective on both rigid metal surfaces (like grit-blasted steel) as well as flexible elastomer and plastic substrates.

How should Loctite 498 be stored?

To maximize shelf life, store Loctite 498 in its unopened original container within a dry location. The optimal storage temperature range is strictly between 8°C and 21°C (46°F to 70°F). Storage below 8°C or greater than 28°C can adversely affect the liquid adhesive's properties.