LOCTITE® 620

LOCTITE® 620 is designed for the bonding of cylindrical fitting parts. The product cures when confined in the absence of air between close fitting metal surfaces and prevents loosening and leakage from shock and vibration. Typical applications include locating pins in radiator assemblies, sleeves into pump housings and bearings in auto transmissions. Particularly suitable for applications where temperature resistance up to 200°C is required.

TYPICAL PROPERTIES OF UNCURED MATERIAL

Flash PointSee SDS

Specific Gravity @ 25 °C1.16
Viscosity, Brookfield – RVT, 25 °C, mPa·s (cP):
Spindle 5, speed 20, rpm
5,000 to 12,000LMS
Viscosity, EN 12092 – MV, 25 °C, after 180 s, mPa·s (cP):
Shear rate 129 s-1
1,200 to 2,400

Directions for Use

For Assembly
1. For best results, clean all surfaces (external and internal) with a LOCTITE® cleaning solvent and allow to dry.
2. If the material is an inactive metal or the cure speed is too slow, spray with Activator 7471™ or 7649™ and allow to dry.
3. Shake the product thoroughly before use.
4. For Slip Fitted Assemblies, apply adhesive around the leading edge of the pin and the inside of the collar and use a rotating motion during assembly to ensure good coverage.
5. For Press Fitted Assemblies, apply adhesive thoroughly to both bond surfaces and assemble at high press on rates.
6. For Shrink Fitted Assemblies the adhesive should be coated onto the pin, the collar should then be heated to create sufficient clearance for free assembly.
7. Parts should not be disturbed until sufficient handling strength is achieved.
For Disassembly
1. Apply localized heat to the assembly to approximately 250 °C. Disassemble while hot.
For Cleanup
1. Cured product can be removed by soaking in a Loctite® solvent, e.g. Loctite® 7200 and mechanical removal with a soft scraper. Avoid formation of dust and aerosols.Complete the cleaning process by wiping with a soft cloth dampened with Loctite® Cleaner, e.g. Loctite® 7063 or Loctite® ODC-free cleaner.

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LOCTITE® 648

Brand: Henkel
Technology:Acrylic
Chemical Type: Urethane methacrylate
Appearance (uncured):Green liquidLMS
Fluorescence:Positive under UV lightLMS
Components:One component- requires no mixing
Viscosity:Low
Cure: Anaerobic
Secondary Cure:Activator
Application:Retaining
Strength: High

LOCTITE® 577

Brand: Henkel
Chemical Type: Dimethacrylate ester
Appearance (uncured):Yellow pasteLMS
Fluorescence:Positive under UV lightLMS
Components:One component- requires no mixing
Viscosity:High, thixotropic
Cure: Anaerobic
Secondary Cure:Activator
Application: Thread sealing

LOCTITE® 573

Brand: Henkel
Technology:Acrylic
Chemical Type: Dimethacrylate ester
Appearance (uncured):Green pasteLMS
Fluorescence:Positive under UV lightLMS
Components:One component- requires no mixing
Viscosity:Medium, thixotropic
Cure: Anaerobic
Secondary Cure:Activator
Application: Gasketing and Sealing

LOCTITE® 460

Brand: Henkel
Chemical Type: Alkoxyethyl cyanoacrylate
Appearance (uncured):Transparent, colorless to straw colored liquidLMS
Components:One component- requires no mixing
Viscosity:Low
Cure: Humidity
Application: Bonding
Key Substrates:Metals , Plastics and Elastomers

LOCTITE® 406

Brand: Henkel
Technology:Cyanoacrylate
Chemical Type: Ethyl cyanoacrylate
Appearance (uncured):Transparent, colorless to straw colored liquidLMS
Components:One component- requires no mixing
Viscosity:Low
Cure: Humidity
Application: Bonding
Key Substrates:Plastics and Rubbers

LOCTITE® 401

Brand: Henkel
Chemical Type: Ethyl cyanoacrylate
Appearance (uncured):Transparent, colorless to straw colored liquidLMS
Components:One component- requires no mixing
Viscosity:Low
Cure: Humidity
Application: Bonding
Key Substrates:Metals , Plastics and Elastomers

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