PERMABOND 790 Cyanoacrylate Instant adhesive Very fast set, wicking type

Product Name

PERMABOND 790 Cyanoacrylate Instant adhesive Very fast set, wicking type

Brief Description

Permabond 790 is an ultra-fast setting, low-viscosity cyanoacrylate adhesive designed for surface-insensitive bonding. It is a wicking-type adhesive, ideal for penetrating tight-fitting parts and post-assembly applications. This single-component adhesive cures rapidly at room temperature upon contact with surface moisture.

Popular Applications & Uses

- Post-assembly bonding and micro-crack sealing.- Bonding closely fitted parts.- High-speed production lines.- Model and jewelry assembly.- Precision electronics and medical device assembly.- Rubber bonding.- Sealing and reinforcing joints.- Filling voids and cracks in woodworking.

Industries that Commonly Use It

- Aerospace/Defense- Artist, Artisan (for model and jewelry assembly)- Automotive Service/Repair (for automotive applications)- Cabinet & Woodworking- General Manufacturing- Government & Military- LED/Electronics (for precision electronics assembly)- Medical Device/ Prosthetics (for medical device assembly)- Metal Fabrication- Plastic Fabrication (for plastics and elastomers)

Special and Unique Features

- Ultra-fast setting time, achieving fixture in 2-3 seconds.- Low viscosity with wicking action, allowing deep penetration into micro-gaps and tight-fitting parts.- Surface-insensitive formula, capable of bonding acidic and difficult-to-bond surfaces.- MIL-SPEC Compliant (MIL-A-46050C Type II, Class 1), suitable for military, aerospace, and industrial applications.- 100% solids and solvent-free, making it eco-friendly with no VOCs.- Minimizes the occurrence of frosting and fogging.- Single-part adhesive, requiring no mixing or heat cure.

Key Properties

- Chemical Composition: Ethyl cyanoacrylate.- Appearance: Clear/Colourless.- Viscosity @ 25°C: 2 mPa.s (cP) (ultra-low viscosity).- Maximum Gap Fill: 0.05 mm (0.002 in) to 0.5mm (0.02").- Fixture/Handling Time: 2-3 seconds (on steel, Buna-N rubber, phenolic).- Full Cure Time: 24 hours.- Shear Strength (ISO 4587, Steel): 18-22 N/mm² (2600-3200 psi).- Impact Strength (ASTM D-950): 3-5 kJ/m² (1.4-2.4 ft-lb/in²).- Temperature Range: -55°C to 82°C (-65°F to 180°F).- Specific Gravity: 1.04 - 1.1.

Surface Compatibility

- Wood- Plated metals- Metals (including aluminum, copper, and their alloys, often benefiting from light abrasion)- Ceramics- Elastomers/Rubbers (e.g., Buna-N)- Plastics (including difficult-to-bond plastics, PVC, polycarbonate, polystyrene)- Acidic surfaces- Porous materials (cure can be facilitated with activators)- Phenolic

Known backups / known substitutes

- Loctite® 420- 3M™ Scotch-Weld™ CA40H- Permatex® Surface-Insensitive Super Glue- Permabond 101 (for wicking applications)- ASI FS5- Loctite 406

Comparison Note

Permabond 790 provides an ultra-fast, high-performance solution for surface-insensitive bonding, often serving as a direct alternative to products like Loctite 420 and 3M CA40H. Its wicking capability and rapid cure speed make it particularly suitable for high-speed production lines and post-assembly applications where other adhesives might be too viscous or slow.