This is the first threadlocker I have used, so I have nothing to compare it with. It does its job, the screws do not come loose, and there is no problem unscrewing them when using a bit more force.
K2 Prolok High Strength thread adhesive delivers robust protection for screw joints by preventing loosening and damage from vibrations. With a liquid formula, the application is simple and clean. The adhesive penetrates and fills the gaps between engaged threads, guaranteeing a firm and stable hold. Entirely resistant to harsh weather conditions as well as both extreme heat and cold, it also enables disassembly with standard hand tools when needed. Compatible with all types of metals and capable of handling minor traces of oil on components.
In contrast to typical thread adhesives, K2 Prolok High Strength does not cure upon exposure to air. Curing occurs only when in contact with metallic elements.
Recommended for applications where regular disassembly is unnecessary. Especially suitable for:
- ASG replicas,
- knives,
- air pistols,
- air carbines,
- black powder firearms.
Attention! Prior to use, thoroughly clean all parts to remove any traces of previous sealants and ensure all surfaces are properly degreased. Apply adhesive evenly to both internal and external threads, using a quantity sufficient to create a continuous bond. Not advised for equipment using pure oxygen, chlorine, or other highly oxidizing chemicals, nor for use with plastics (particularly thermoplastics), which may suffer from stress cracking.
Technical data
Capacity: 6 ml
Manufacturer: K2, Poland
| Unit value | 6 ml |
|---|---|
| EAN | 5906534003959 |
| Manufacturer code | B151 |
| Brand | K2 |
| Expiration date | 2028-07-01 |
| EAN |
Reviews with photos
Review summary
This threadlocker receives very positive feedback for keeping screws from loosening on their own, even under vibration and heavy use. Customers praise its versatility in knives, airguns, ASG replicas, optics, holsters, bicycles, and small workshop repairs. Users also value the easy application, good efficiency, and strong price-to-quality ratio, often describing it as a cheaper alternative to Loctite. Many reviews note that it holds firmly while still allowing screws to be removed with standard tools in most cases. Some buyers mention that it may feel too strong for delicate screws or for parts that need frequent disassembly.
Number of reviews: 180
-
-
Good threadlocker. It holds screws firmly, but not so tightly that they cannot be unscrewed again if needed. I used it when mounting optics and I recommend it.
-
Very good glue and the price is not excessive It holds screws firmly, but not so firmly that it is difficult to unscrew them again if necessary I highly recommend it
-
A multifunctional adhesive for threads. It works both for knives and in the workshop (e.g. in the braking system). Easy application, no disadvantages whatsoever.
-
I haven't managed to use up the entire glue yet, so it's hard to say whether the quantity compared to the price is okay. The tube itself seems sufficiently large. The glue is efficient and not excessively strong. Admittedly, this is my first product of this type purchased for a knife, so I have no basis for comparison, but for now it meets my expectations.
-
Very good threadlocker, I've been using it for some time and it hasn't let me down. I use it when servicing my replicas. I recommend it.
-
Very strong thread glue. I had a problem with a heavily recoiling airgun with one screw—after using this preparation, the problem disappeared and hasn't returned. I recommend it.
-
Very nice threadlocker. Useful for spring airguns and not only. Solves the problem of unscrewing screws, but when you need to take something apart, using more force breaks the glue easily. I recommend it.
-
Good glue, not too strong, but the screws don’t loosen, which is the point. Quick and cheap solution to the problem. Fast and well-protected shipping. Recommend.
-
Very durable and good threadlocker. I used it to fix screws in a grill, even there it worked, and it holds well in folding knives too. Overall, it's good even for small repairs. I recommend it.
-
All I can say is, be careful, it's very strong. If you need to secure a screw to make sure it doesn't come loose at an inconvenient time for you, this glue will do the job.
-
Very good threadlock, I've been using it for some time and it has never let me down. I've already mounted several red dots on pistols and ARs, and everything still holds.
-
This threadlock glue worked perfectly. I used it for an adjustable trigger on my replica. The adjustment screw used to even fall out, not to mention loosen. I applied a small amount to the screw, tightened it, and during shooting, it didn't move a millimeter. Great product, highly recommended.
-
K2 Prolok threadlock glue worked great – very easy to use, sets quickly, and holds tightly. It's perfect for screws in equipment and small repairs.
-
Very good product. I bought it because the screws on the pivots of my butterfly knives kept coming loose. So far, everything is okay, and I highly recommend it.
No reviews