Loctite 499 Instant Adhesive Gel 20g

Loctite 499 Super Bonder Instant Adhesive Gel (20g) is a high-viscosity, clear ethyl cyanoacrylate gel engineered for maximum efficacy in high-performance bonding. This industrial-grade adhesive permanently bonds components, preventing costly structural failures or component shifting caused by thermal cycling and heavy vibration. Whether you are securing vertical assemblies or overhead components, this premium adhesive gel provides a robust, leak-proof seal on all materials—including difficult-to-bond plastics, rubbers, and metals.

Why Choose Loctite 499 Heat Resistance?

• Non-Drip Gel Formula: The high-viscosity gel consistency prevents running and dripping, making it ideal for vertical or overhead applications.
• 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 damp environments, preventing premature bond breakdown.
• Multi-Substrate Versatility: Provides exceptionally strong, rapid adhesion across a wide mix of rubbers, plastics, and metals.
• Extended Temperature Limits: Maintains structural integrity and reliable performance across a service temperature range of -65°F to 180°F.

Technical Specifications

• Product Type: Ethyl Cyanoacrylate Adhesive Gel (1-Part)
• Strength: High (3,000 psi shear strength on grit-blasted steel)
• Color: Clear / Translucent Colorless
• Container Size: 20g
• Curing Type: Ambient Atmospheric Humidity / Moisture Curing

Simple Application Instructions

1. Clean: For optimal results, clean all internal and external mating surfaces with a Loctite cleaning solvent to remove oil, grease, or debris, and let dry completely.
2. Apply: Apply several drops or a bead of the liquid adhesive gel to the targeted bonding area on one surface.
3. Assemble: Assemble and firmly press the parts together immediately. The formula will begin curing once exposed to ambient atmospheric humidity between the tight-fitting surfaces.

Frequently Asked Questions (FAQ)

What is Loctite 499 used for?

Loctite 499 is a high-viscosity, general-purpose instant adhesive gel designed for applications where heat and moisture resistance are required. It is specifically formulated to prevent parts from failing or loosening due to thermal shock, high humidity, and mechanical stress.

Can Loctite 499 be disassembled?

No, it creates a highly rigid, permanent bond under normal conditions. To disassemble parts, you must apply sustained localized heat exceeding its maximum operational limit or use specialized cyanoacrylate removal solvents like nitromethane or acetone to dissolve the cured gel matrix.

Does Loctite 499 work on porous or vertical surfaces?

Yes. Loctite 499 offers robust performance across difficult geometries. Its thick gel profile is highly effective on both porous materials that would absorb thin glues, as well as vertical or inverted surfaces where running and dripping must be avoided.

How should Loctite 499 be stored?

To ensure maximum shelf life, store the product in its unopened original container in a dry location. Optimal storage is between 8°C and 21°C. Storage below 8°C or greater than 28°C can adversely affect the product's liquid gel properties.