LOCTITE® SF 7649 Surface Prep
Known as LOCTITE 7649
Features and Benefits
Solvent-based activator for promoting the cure speed of LOCTITE anaerobic adhesives and sealants. Prepares surfaces to increase cure speed without loss of joint strength.
LOCTITE® SF 7649 is specially designed to promote the cure speed of LOCTITE® anaerobic adhesives and sealants without any significant loss of joint strength. Ideal for applications with passive metals or inert surfaces and with large bond gaps, it offers great performance at low cure temperatures (< 15°C / < 60°F).
- Promotes the cure speed of LOCTITE anaerobic adhesives & sealants
- For use on applications with passive metals & inert surface
- Low-temperature cure (< 15°C / < 60°F)
- For large bond gaps
Documents and Downloads
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Technical Information
| Application method | Brush, Pre-applied, Spray |
| Applications | Anaerobic priming, Gasketing, Pipe sealing, Retaining, Thread sealing, Threadlocking |
| Chemical basis / base | Acetone |
| Color | Green |
| Cure type | Non-curing |
| Key characteristics | Cure Accelerant, Enables low temperature curing |
| Physical form | Liquid |
| Recommended for use with | Metal, Metal: passive metal |
How to
Step by Step Guide
1. Preparation - Cleaning
It is recommended to use the correct LOCTITE® cleaner for the surface to be bonded (such as LOCTITE® SF 7063 or SF 7070) to degrease and clean surfaces prior to applying the adhesive.
2. Application of Accelerator
LOCTITE® SF 7649 can be either sprayed or brushed onto one or both mating surfaces. For smaller gaps, it is only necessary to apply the accelerator to one surface. Pourous surfaces my require two treatments of activator.
3. Application of Anaerobic Product
Allow the solvent carrier of the activator to evaporate off completely so that the parts are dry to the touch. The accelerator has an on-part life of 30 days. Within that window of time, the anaerobic can be applied normally.
Frequently Asked Questions
Do I need to use a primer with anaerobics?
LOCTITE® SF 7649
Solvent-based activator for promoting the cure speed of LOCTITE anaerobic adhesives and sealants. Prepares surfaces to increase cure speed without loss of joint strength.