Loctite 620 Retaining Compound Instruction Manual

1. Introduction

The Loctite 620 Retaining Compound is a high-strength, high-temperature anaerobic adhesive designed for bonding cylindrical fitting parts. This product is formulated to lock and secure metal cylindrical assemblies, prevent metal fretting and corrosion, and seal against leakage. It is suitable for applications requiring high temperature resistance and robust bonding.

2. Produit terminéview

Image: Loctite 620 Retaining Compound in a 10 mL bottle. This green-colored adhesive is used for securing cylindrical metal parts.

Loctite 620 is a high-viscosity liquid retaining compound. Key characteristics include:

• Couleur: Vert
• Gap Fill: Up to 0.015 inches (0.38 mm) maximum
• Viscosité: 8500.0 cP
• Shear Strength: 3800 psi
• Plage de température : -65.0°F (-54°C) à 450.0°F (232°C)
• Chemical Compound: Acrylic Ester
• Curing Method: Anaerobic (cures in the absence of air when confined between close-fitting metal surfaces)
• Applications : Cylindrical joint assemblies
• Matériaux applicables : Steel, Most Metals
• Odeur: Bénin
• Résistance: Acetone, Brake Fluid, Corrosive Process, Heat, Unleaded Petrol, Wear
• Packing Type: Bouteille
• Volume: 10 ml

3. Consignes de sécurité

Always prioritize safety when handling chemical products. Consult the Material Safety Data Sheet (MSDS) for comprehensive safety information before use. The MSDS for Loctite 620 Retaining Compound (e.g., 62015 Retaining Compound Slip Fit 620.pdf) provides detailed guidance on safe handling, storage, and emergency procedures.

• Équipement de protection individuelle : Wear appropriate gloves and eye protection (safety glasses or goggles) to prevent skin and eye contact.
• Ventilation: Utiliser dans un endroit bien ventilé pour éviter d'inhaler les vapeurs.
• Stockage: Conserver dans un endroit frais et sec, à l'abri de la lumière directe du soleil et des substances incompatibles. Bien refermer le récipient après usage.
• PREMIERS SECOURS: In case of contact, refer to the MSDS for specific first aid measures.
• Élimination: Dispose of product and packaging in accordance with local, regional, national, and international regulations.
• Tenir hors de portée : Tenir hors de portée des enfants et des animaux domestiques.

4. Setup and Surface Preparation

Proper surface preparation is critical for optimal performance of the retaining compound.

1. Surfaces propres : Thoroughly clean all mating surfaces to remove any oil, grease, dirt, or other contaminants. Use a suitable industrial cleaner or degreaser.
2. Surfaces sèches : Ensure all surfaces are completely dry before applying the compound. Moisture can interfere with the curing process.
3. Roughening (Optional): For maximum adhesion on passive metals or large gaps, light abrasion of the surfaces may be beneficial, followed by cleaning.

5. Instructions d'utilisation (Application)

Follow these steps for effective application of Loctite 620 Retaining Compound:

1. Dispense Compound: Apply a sufficient amount of Loctite 620 Retaining Compound to one or both mating surfaces of the cylindrical assembly. Ensure complete coverage of the bond area.
2. Assembler les pièces : Quickly assemble the parts. The anaerobic curing process begins when the compound is confined between the metal surfaces in the absence of air.
3. Temps de séchage :
   • Fix Cure Time: Approximately 30 hours at 77°F (25°C). This is the time required for the assembly to achieve sufficient handling strength.
   • Temps de durcissement complet : Approximately 24 hours at 77°F (25°C). This is the time required for the product to achieve its maximum strength. Note: Cure times can vary depending on temperature, gap, and substrate material.
4. Post-assemblage : Avoid disturbing the assembly during the initial fix cure period to ensure proper bonding.

6. Maintenance et stockage

Un stockage adéquat garantit la longévité et l'efficacité du produit.

• Conditions de stockage : Store the Loctite 620 Retaining Compound in its original container in a cool, dry, and well-ventilated area. Ideal storage temperature is between 46°F (8°C) and 82°F (28°C).
• Scellage des conteneurs : Keep the bottle tightly closed when not in use to prevent air exposure, which can initiate curing.
• Durée de conservation : Refer to the product packaging or technical data sheet for specific shelf life information.

7. Dépannage

If you encounter issues during application or curing, consider the following:

• No Cure or Slow Cure:
  • Propreté de la surface : Ensure surfaces were thoroughly cleaned and degreased. Contaminants can inhibit curing.
  • Anaerobic Conditions: Verify that the compound is fully confined between metal surfaces with minimal air exposure. Anaerobic adhesives require the absence of air to cure.
  • Température: Curing speed is temperature-dependent. Lower temperatures will result in slower cure times. Ensure application is within recommended temperature ranges.
  • Matériau du substrat : Some metals (e.g., stainless steel, zinc, aluminum) are less active and may cure slower. An activator may be required for passive substrates or large gaps, though not explicitly mentioned for this product, it's a general anaerobic adhesive troubleshooting step.
• Mauvaise adhérence :
  • Gap Size: Ensure the gap between parts is within the specified 0.015-inch maximum. Excessive gaps can lead to incomplete curing and poor strength.
  • Préparation de la surface : Re-evaluate surface cleaning and drying procedures.

8. Spécifications

9. Informations sur la garantie

Specific warranty details for the Loctite 620 Retaining Compound are not provided within this manual. For information regarding product warranty, please contact Loctite customer support or refer to the official Loctite website.

10. Assistance et contact

For further assistance, technical data sheets, or safety information, please refer to the official Loctite resources.

• Official Loctite Store: Visit the Loctite Store on Amazon
• Fiches de données de sécurité (FDS) : Always consult the latest MSDS for detailed safety and handling instructions.
• Support technique : Contact Loctite directly for product-specific technical support.