Henkel LOCTITE-649 (250ML-BOTTLE)

Additional Product Information

Overview

LOCTITE 649 is a high-performance retaining compound designed for metal-to-metal bonding in aviation and MRO operations. Its low-viscosity, one-component acrylic formulation cures anaerobically between close-fitting parts, ensuring reliable retention and minimal assembly downtime. Maintenance and engineering teams rely on it for precision, strength, and consistency in cylindrical assemblies, making it an essential solution for aircraft maintenance and AOG situations.

Key Technical Specs for LOCTITE 649

• Type: Acrylic Retaining Compound
• Size/Volume: Various industrial sizes available
• Color: Green liquid (UV-fluorescent)
• Viscosity/Consistency: 400 950 mPa s (cP) depending on spindle and speed
• Cure/Working Time: Anaerobic; handling strength develops in minutes; full cure in 24 72 hours
• Tensile/Peel Strength: Breakaway torque 25 45 N m; prevail torque 30 60 N m
• Shore Hardness: Not applicable (liquid adhesive)
• Service Temperature: Up to 180 C (356 F) with maintained performance
• Typical Uses: Retaining bearings, bushes, gears, cylindrical assemblies
• Shelf Life: Optimal storage 8 C to 21 C (46 F to 70 F)

Approvals & Specifications

• ISO 10123 shear strength tested
• ISO 10964 torque performance validated
• Compliance with industrial and OEM specifications for metal bonding in aerospace applications

Typical Aircraft MRO / AOG Applications

• Bonding of bearing assemblies in landing gear systems
• Retention of bushings in actuators and control linkages
• Securing gears in auxiliary power units (APUs)
• Fastening shafts and pins in high-vibration engine components
• Maintenance operations requiring rapid, reliable assembly during AOG events

Compatibility & Safety Notes

• Compatible with most metals; not recommended for thermoplastics prone to stress cracking
• Use proper PPE: gloves and eye protection recommended
• Ensure surfaces are clean and dry; pre-treat inactive metals with Activator 7471 or 7649 for faster curing

Packaging & Procurement

• Available in industrial cartridges and bulk containers
• Market packs designed for ease of dispensing in maintenance environments
• Store in unopened containers between 8 C and 21 C (46 F to 70 F)
• Remove excess adhesive with Loctite solvent and mechanical abrasion

Why LOCTITE 649 is Chosen for AOG / MRO

• Rapid and reliable curing reduces aircraft downtime
• Versatile application on multiple metal substrates
• High strength ensures durable assembly even under vibration and thermal stress
• Portable and simple to apply in field maintenance scenarios

Practical Suggestions for Your Team (AOG Mindset)

• Keep stocked in critical sizes for rapid AOG response
• Train maintenance staff on proper surface preparation and activator use
• Use rotating motion during slip-fit assembly for full coverage
• Preheat shrink-fit components for easier application

Manufacture / Aviation Spec Codes

• Manufacturer: Henkel
• Product ID: LOCTITE 649
• MIL/OEM Codes: ISO 10123, ISO 10964, industrial OEM standards

Alternative Names & Descriptions

• Henkel 649 Retaining Compound
• LOCTITE 649 Acrylic Adhesive
• LOCTITE Bearing Retainer 649
• Henkel Industrial LOCTITE 649
• Aero Retaining Adhesive 649