








🔩 Lock it tight, service it easy — the pro’s choice for unstoppable fasteners!
LOCTITE 243 is a medium-strength, blue threadlocker designed for automotive and general-purpose use. It offers superior adhesion on all metals, including oily and passive surfaces, withstanding temperatures up to 360°C. Trusted by OEMs and race teams alike, it cures quickly and allows easy disassembly with hand tools, making it ideal for maintenance on fasteners sized 6mm to 20mm.




| ASIN | B005M1RI84 |
| Best Sellers Rank | 206,004 in Automotive ( See Top 100 in Automotive ) 832 in Fillers, Adhesives & Sealants 4,858 in Vehicle Oils & Fluids |
| Brand | Loctite |
| Colour | Blue |
| Compatible Material | Metal |
| Container Type | Can |
| Customer Reviews | 4.8 out of 5 stars 651 Reviews |
| Full Cure Time | 24 Hours |
| Global Trade Identification Number | 00079340439092 |
| Included Components | (1) Threadlocker 243 Surface Insensitive-Medium Strength Bottle, Blue, 36-ml |
| Item Form | Bottle |
| Item Package Quantity | 1 |
| Item Type Name | Loctite 1330906 Threadlocker 243 Surface Insensitive-Medium Strength Bottle, Blue, 36-ml |
| Item Volume | 36 Millilitres |
| Item Weight | 0.18 Pounds |
| Item form | Bottle |
| Manufacturer | Loctite |
| Manufacturer Part Number | 1330906 |
| Material | Aluminum , Stainless Steel |
| Model Number | 1330906 |
| Other Special Features of the Product | Surface insensitive, suitable for fasteners between 1/4-Inch to 3/4-Inch |
| Special feature | Surface insensitive, suitable for fasteners between 1/4-Inch to 3/4-Inch |
| Specific Uses For Product | automotive maintenance and repair, parts requiring threadlocking and sealing, medium-strength applications |
| Specific uses for product | automotive maintenance and repair, parts requiring threadlocking and sealing, medium-strength applications Specific uses for product automotive maintenance and repair, parts requiring threadlocking and sealing, medium-strength applications See more |
| UPC | 079340439092 |
| Unit Count | 1.22 millilitre |
| Viscosity Level | Medium |
| Water Resistance Level | Water Resistant |
Y**O
good
good
D**R
Good stuff, really works better than the 242 on stainless and oily environment
The 243 formula really makes a difference when used on stainless and other corrosion resistant metals, even with oil or grease contamination, like that you often get in tap holes of anything mechanical like engine, bikes, gears and sprockets, motors, etc. Using the 242, I often observed very poor, if not total lack of thread locking, when using stainless fasteners or in a shop environment, anywhere around greasy or oily parts. With the 243, I still yet to have a failure in thread locking and I've been using it for over a year now. 36mL is a lot cheaper than the 6mL tube and no, it won't go to waste because you used it once a year ago and are afraid it's no good anymore. Simply cap it off properly and it's gonna remain usable for a very long time. Don't forget to shake it up before using it that day, just like you would shake and stir your paint before painting.
A**Z
Bueno
Muy buen producto. Les aconsejo agitarlo y al final sacudirlo hacia la base, con la punta hacia arriba ya que de lo contrario la diferencia de presión de la burbuja de aire dentro del resilience puede hacer que brote el contenido. En mi caso el producto fue algo espeso y tardó en asentarse. Cumple su función a la perfección. NOTA Cuenta con una indicación de ser posible generador de cancer .
M**W
It Does What It's Supoosed To
Ordered this Red Loctite, it came within the estimated delivery dates, and works and does the job Red Loctite is supposed to.
C**S
It's Loctite.
It's Loctite, if you're buying this you probably don't need a review on it. It's not a Chinese knockoff or anything.
Trustpilot
4 days ago
1 month ago