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LOCTITE® 609 General Purpose Retaining Compound

Features and Benefits

High strength methacrylate ester acrylic retaining compound designed for the bonding of cylindrical fitting parts.
LOCTITE® 609 is a green, high strength methacrylate ester acrylic retaining compound designed for the bonding of cylindrical fitting parts. The product cures in the absence of air between close fitting metal surfaces. Typical applications include rotor to shafts in fractional and subfractional horsepower motors. Locks bushings and sleeves in housings on shafts. Augments press fits.
  • Low viscosity
  • Augments press fits
  • Prevents loosening and leakage from shock and vibration
  • Tested to the lot requirements of Military Specification Mil-R-46082B (this is a regional approval)
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Technical Information

Agency approvals / certificates / specifications ASTM D5363, MIL-R-46082B for existing designs
Application method Dispense Gun, Dispense System, Manual
Applications For Close Fitting Cylindrical Parts, Retaining
Color Green
Cure type Anaerobic Cure
Fixture time 10.0 min.
Gap fill 0.15 mm
Key characteristics Fluorescent, Shear Strength: High Shear Strength, Viscosity: Low Viscosity
Operating temperature -65.0 - 300.0 °F (-55.0 - 150.0 °C )
Physical form Liquid
Recommended for use with Metal
Shear strength, Steel 2300.0 psi (15.0 N/mm² )
Specific gravity, @ 25.0 °C 1.1
Viscosity 120.0 mPa·s (cP)

How to

Step by Step Guide

1. Preparation - Cleaning

Use LOCTITE® 790™ for easier removal of old adhesive residues. It is recommended to use LOCTITE® 7070™ to degrease and clean surfaces prior to applying the adhesive. For gaps larger than 0.5mm or for worn out shafts, bearing seats or keyways, use LOCTITE® metal-filled compounds or LOCTITE® 660™ Retaining Compound.

2. Preparation - Activation

If cure speed is too slow due to passive metals or low temperature (below 5°C), use activator LOCTITE® SF 7649™ (see cure speed vs activator graph in the TDS). Allow to dry.

3a. Application - For Slip-Fitted Assemblies

Apply adhesive around the leading edge of the male component and the inside of the female component. Assemble parts with a rotating motion to ensure good coverage. Wipe off excess adhesive.

3b. Application - For Press-Fitted Assemblies

Apply 360 degree beads of adhesive to both bond surfaces at the leading edges of insertion or engagement, and assemble at high press-on rates. Wipe off excess adhesive.

3c. Application - For Shrink-Fitted Assemblies

Apply the adhesive onto the male component; heat the female component to cause expansion for free assembly. Assemble components and allow temperatures to equilibrate. Wipe of excess adhesive.

4. Disassembly

Apply localized heat to approximately 500°F/260°C; disassemble while hot. For corroded or seized parts, use LOCTITE® 8040™ Freeze and Release.


For manual assembly of adhesive, the use of LOCTITE® Pro Pump or LOCTITE® Peristaltic Hand Pump is recommended to ensure a conistent application volume. For semi-automatic or fully-automated dispensing options, contact our technical service team for advice.

Frequently Asked Questions