LOCTITE® 649
Features and Benefits
A 1-part, high strength, low-viscosity retaining compound for bonding cylindrical fitting parts.
LOCTITE® 649 is a green, high-strength retaining compound suitable for a maximum diametrical clearance of 0.1 mm. This low-viscosity urethane methacrylate ester liquid contains no acrylic acid and cures when confined in the absence of air between close-fitting metal surfaces. It’s designed to prevent loosening and leakage from shock and vibration. It has a 10-minute fixture time on steel and an operating temperature range of -55°C to 175°C (-67°F to 347°F).
- Anaerobic-curing
- Secondary cure (activator) available
- High strength
- Fluorescent under UV for quality control
- Service/operating temperature: -55°C to 175°C (-67°F to 347°F)
Documents and Downloads
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Technical Information
| Chemical basis / base | Methacrylate |
| Color | Green |
| Diametrical clearance | <0.1 mm |
| Fixture time | 10.0 min. |
| Recommended for use with | Metal: steel |
| Shear strength | 15.0 N/mm² |
| Viscosity, Brookfield - RVT, @ 25.0 °C Spindle 2, speed 20 rpm | 550.0 - 950.0 mPa·s (cP) |
LOCTITE® 649
A 1-part, high strength, low-viscosity retaining compound for bonding cylindrical fitting parts.