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🔗 Lock it down, even when the temps drop!
Loctite SF 7649 Primer and Cleaner is a solvent-based activator designed to enhance the curing speed and bond strength of anaerobic adhesives on passive metals and inert surfaces. With a long on-part life and reliable performance at low temperatures (below 15°C), it ensures durable, water-resistant bonds ideal for professional-grade metal applications.
| ASIN | B000HZJEF0 |
| Age Range Description | Adult |
| Best Sellers Rank | #99,499 in Automotive ( See Top 100 in Automotive ) #65 in Automotive Primers |
| Brand Name | Loctite |
| Color | Clear |
| Color Code | 000000 |
| Container Type | Can |
| Coverage | 25 |
| Customer Reviews | 4.8 4.8 out of 5 stars (40) |
| Finish Type | Satin |
| Included Components | bottle |
| Item Form | Liquid |
| Item Volume | 4.5 Fluid Ounces |
| Item Weight | 4.8 Ounces |
| Manufacturer | Loctite |
| Model Number | 21348 |
| Part Number | 21348 |
| Size | 4.5 Fl Oz (Pack of 1) |
| Special Features | Long On-Part Life, Low Temperature Functionality |
| Specific Uses For Product | primer |
| Surface Recommendation | Metal |
| Unit Count | 4.5 Fluid Ounces |
| Water Resistance Level | Water Resistant |
J**A
Cleaner/Primer for loctite
This is the good stuff. If you ever wondered if thread locker or sleeve locking compound would hold something that is greasy or dirty, it really doesn't - at least not very well. Use this stuff to clean down to bare metal, apply the locking compound, and it will hold much better. Not only is it a primer, but it is also an activator, and (according to the label) it helps things cure faster. I don't know about that, but I do know I had a bolt that kept coming loose even with the high strength red loctite, and when using this, it has stayed tight. I never could get the threads perfectly 'clean' before, and I think that is the difference. There may be other things that would have worked, but I can say for sure this did the job.
A**R
Good Price
My coworker, Mechanic, needed this product as he really liked it. So I found a good price on Amazon.
D**R
Quality
It works like it should
Trustpilot
2 weeks ago
3 weeks ago