The Loctite 609 retaining compound is a high-strength, anaerobic adhesive designed for bonding cylindrical metal components, such as shafts, gears, pulleys, and bearings. Its medium-viscosity formula fills microscopic gaps between close-fitting parts to prevent loosening, corrosion, and wear over time.
Packaged in a compact 50 ml bottle, this green compound is perfect for both OEM and maintenance operations where precision and durability are essential.
Brand: LOCTITE
Model: 609
Size: 50 ml
Color: Green
Viscosity: 125 cP
Strength: High
Cure Type: Anaerobic
Fixture Time: 10 – 20 minutes
Full Cure: 24 hours
Temperature Range: -65°F to 300°F (-55°C to 150°C)
Gap Fill: Up to 0.005″ (0.127 mm)
Recommended Use: Close-fitting press-fit parts
Mounting bearings in housings
Securing bushings, sleeves, or collars
Holding gears or pulleys onto shafts
General shaft-to-hub assemblies
Preventing loosening in vibrating machinery
When press-fit components must stay in place under load, the Loctite 609 retaining compound is the go-to solution.
High-strength hold: Prevents loosening due to vibration or shock
Corrosion resistance: Seals out moisture and contaminants
No shrinkage: Fills gaps and maintains fit integrity
Oil-tolerant: Bonds even slightly contaminated surfaces
Versatile: Compatible with a wide range of metals
Clean and degrease surfaces with Loctite SF 7063 or equivalent.
Apply a small amount of Loctite 609 retaining compound to the shaft and/or housing bore.
Assemble the parts with a rotating motion to evenly spread adhesive.
Allow to cure — fixture time is typically 10–20 minutes; full strength in 24 hours.
For disassembly, use heat (>250°C) and mechanical tools.
Feature | Loctite 609 | Loctite 680 |
---|---|---|
Strength | High | Very High |
Viscosity | Low (125 cP) | Medium |
Gap Fill | Up to 0.005″ | Up to 0.015″ |
Use Case | Close-fit parts | Slightly looser fits |
Fixture Time | ~10–20 minutes | ~10 minutes |
Choose Loctite 609 when exact fit and fast cure are required.
Loctite retaining compounds are trusted by professionals in the automotive, aerospace, manufacturing, and maintenance industries. The Loctite 609 offers proven strength, ease of use, and dependable results — making it a must-have for ensuring secure mechanical assemblies.