Henkel LOCTITE-620 (250-ml-Btl)

Additional Product Information

Overview

LOCTITE 620 is a high-strength acrylic methacrylate adhesive designed for bonding cylindrical metal components. Widely used in aviation and MRO operations, it provides reliable retention in assemblies subject to vibration, shock, and high temperatures. Maintenance and engineering teams rely on it to prevent loosening, leakage, and ensure long-lasting component integrity.

Key Technical Specs for LOCTITE 620

• Type: Acrylic Methacrylate Ester Adhesive
• Appearance (Uncured): Green Liquid
• Viscosity/Consistency: High (Brookfield RVT 8,500 cP at 23 C, spindle 5, 20 rpm)
• Cure/Working Time: Anaerobic, with optional activator for faster cure
• Tensile/Peel Strength: Compressive Shear Strength 17 N/mm (2,500 psi) at 23 C; 24 N/mm (3,500 psi) after 24h @ 177 C
• Service Temperature: Performs up to 180 C (356 F) post-curing
• Typical Uses: Retaining bearings, bushings, sleeves, and locating pins in housings or shafts
• Shelf Life: Store 8 21 C (46 70 F); avoid prolonged exposure below 8 C or above 28 C

Approvals & Specifications

• Consult Henkel representative for specific OEM and military approvals
• Meets ISO 10123 shear strength testing standards
• Compliant with industry chemical resistance standards for motor oil, brake fluids, petrol, ethanol, and acetone

Typical Aircraft MRO / AOG Applications

• Securing bearings in auxiliary gearboxes and engine assemblies
• Locking bushings and sleeves into aircraft housings
• Retention of locating pins in radiator and fluid assemblies
• General metal-to-metal bonding in high-vibration areas

Compatibility & Safety Notes

• Designed for metal substrates; not recommended for most plastics
• Use PPE: gloves and eye protection during handling
• Ensure surfaces are clean and dry; aqueous washing may affect cure
• Not suitable for pure oxygen or strong oxidizers

Packaging & Procurement

• Available in various container sizes (consult Henkel catalog)
• Market packs suitable for workshop and field use
• Store in unopened containers at 8 21 C (46 70 F)
• Easy to apply for slip-fit, press-fit, or shrink-fit assemblies

Why LOCTITE 620 is Chosen for AOG / MRO

• Rapid anaerobic curing ensures minimal downtime
• High strength and vibration resistance increase assembly reliability
• Versatile for a wide range of cylindrical metal applications
• Temperature tolerance allows use in high-heat aircraft components

Practical Suggestions for Your Team (AOG Mindset)

• Stock activators (SF 7471, SF 7649) to accelerate assembly time when needed
• Train maintenance teams in proper surface preparation and application
• Store in temperature-controlled conditions to maintain performance
• Use mechanical aids for disassembly when heating above 300 C (572 F) is required

Manufacture / Aviation Spec Codes

• Manufacturer: Henkel Corporation
• Product ID: LOCTITE 620
• MIL/OEM/Export Codes: Contact Henkel representative for details

Alternative Names & Descriptions

• LOCTITE 620 Retaining Compound
• Henkel 620 Anaerobic Adhesive
• LOCTITE Medium-High Strength Retaining Adhesive
• LOCTITE Green Retaining Compound 620
• Henkel Cylindrical Retaining Adhesive 620