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Loctite 1330799 243 Blue Oil Resistant Threadlocker Tube, 6-milliliter

by Loctite
4.9 out of 5 stars 57 customer reviews
List Price: $10.49
Price: $9.80 & FREE Shipping on orders over $49. Details
You Save: $0.69 (7%)
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6 Milliliter
  • Enter your model number above to make sure this fits.
  • Improved oil tolerance
  • Parts can be separated using hand tools
  • Has a higher temperature range than all the other blue thread lockers
  • Better adhesion on inactive metals like stainless steel
  • Typical applications include rocker studs, rocker adjustment bolts, bolts on valve and cam covers, oil pans, disc brake calipers, intakes and alternators, and pulley assemblies
› See more product details
16 new from $7.01
$9.80 & FREE Shipping on orders over $49. Details In Stock. Ships from and sold by Amazon.com.

Frequently Bought Together

  • Loctite 1330799 243 Blue Oil Resistant Threadlocker Tube, 6-milliliter
  • +
  • Loctite 37421 271 Red Heavy Duty Threadlocker, 6-milliliter Tube
  • +
  • Loctite 38653 222 Purple Low Strength Thread Locker Tube, 6-milliliter
Total price: $25.65
Buy the selected items together

Product Information

Size:6 Milliliter

Technical Details

Brand Loctite
Item Weight 0.8 ounces
Product Dimensions 3.8 x 6.5 x 0.8 inches
Origin China
Item model number 1330799
Manufacturer Part Number 1330799
OEM Part Number 1330799

Additional Information

ASIN B004L439FE
Customer Reviews
4.9 out of 5 stars 57 customer reviews

4.9 out of 5 stars
Best Sellers Rank #3,538 in Automotive (See top 100)
#8 in Automotive > Oils & Fluids > Sealers > Thread Lock
#33 in Automotive > Oils & Fluids > Body Repair & Restoration Chemicals > Adhesives
Shipping Weight 0.8 ounces (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First Available July 7, 2004

Warranty & Support

Warranty, Parts:PartsWarranty, Labor:Full Manufacturer's Warranty - Sold by Authorized Reseller

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Customer Reviews

Top Customer Reviews

5.0 out of 5 starsThe best thread locker in the class
By Will on December 5, 2012
Size: 6 Milliliter Verified Purchase
I tried several thread lockers before starting using this one and there is a big difference. It is not necessary to perfectly clean off bolts before applying 243 threadlocker. The thickness of the liquid is just right. It is sufficiently liquid to easily apply to bolts but not too liquid to drip off. The strength of locking is sufficient to prevent bolts release from vibration but is not too strong to affect removing bolts with a screwdriver.

I mostly use threadlocker with RC helicopter parts and had a few times bolts coming off in flight. It never happened since I switched to Loctite 243.

Highly recommended.

The only possible "complaint" is that the container is red color, even though formula is blue (medium strength). I have blue (243), red (271) and green (290) strength loctites in my toolbox and have to read the label to select one. It would have been much easier to have matching strength to container's color.
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5.0 out of 5 starsNo More Seized Bearings
By Michele Darien on July 30, 2013
Size: 6 Milliliter Verified Purchase
I purchased Loctite formula 243 after cap screws on my longboard brake truck came loose while I was out skating. Thank the Lord that I was still testing the truck at a low cruising speed because the screws jammed up one of the bearings on one wheel and also came loose in the other rear wheel. The Loctite has prevented the screws from loosening from road vibrations.

As one reviewer noted, the blue Loctite 243 comes in a red bottle. I had bought the fast-acting "Super Glue Professional" Loctite at a big box hardware store before I found out the exact formula I would need. It comes in a blue bottle that has a blue cap. It was the wrong formula because, from what I understand, I wouldn't have been able to remove the screws with hand tools. I did not use it. And, I could not find formula 243 in local stores. So, if you want a secure thread locker that will still allow you to replace screws easily, look into Loctite 243. Just be sure to shake the bottle well before use.
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5.0 out of 5 starsThis is good stuff!
By Ken on October 2, 2013
Size: 6 Milliliter Verified Purchase
Loctite has a huge variety of threadlockers to choose from. This one seemed like a good choice, since I needed to use it with stainless steel, and this one is listed as "surface insensitive", meaning it doesn't need to chemically react with the screw to grab it. Then I see the fine print that you may have to heat the area to 500F to remove a screw. Of course then I had to remove a screw I'd used this on, but was glad to find that I had no problem, with a small Allen wrench, removing the screw. But there was a grab there that I'm sure would prevent the screw from loosening on its own. I think this 243 is perfect for a lot of needs.
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4.0 out of 5 starsLoctite - A Brand Well Known
By KAL on February 12, 2014
Size: 6 Milliliter Verified Purchase
This brand is well-known and I have used their various products for years. This particular threadlocker is useful and important because of its oil resistance - because I use it on firearm screws where it will come in contact with gun oils and solvents.
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5.0 out of 5 starsfor removable bolts, 243 is best
By James Q. Smith on February 27, 2015
Size: 6 Milliliter Verified Purchase
This is the best loctite for thread locking screws or bolts, whatever is metal on metal, that you'd like removeable later on. Unlike Loctite 242, you needn't worry about cleaning off all grease on the threads, or even contaminating the surfaces with oil from your hands. 243 is harder to find, most retail stores stock 242.

I wish Loctite would make these bottles all blue, not blue lettering on a red bottle to avoid confusion with #271 or #262, which is permanent threadlocker. Now if you make a mistake and use #271, it is nearly impossible to remove without a blow torch! Sometimes, #271 is sold with a BLUE band on a red bottle. The only key is that regardless of the bottle color, the number 271 is always colored red, while the number 242, or 243 are always colored blue.
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4.0 out of 5 starsWorks very well
By David on April 11, 2014
Size: 6 Milliliter Verified Purchase
I use this loctite in motorcycle screws and so far it works very well.

I have to say that I actually expected the liquid to be a little thicker, it is rather liquid, not so liquid that it drips or spills, but I expected it to form a thicker rubbery material on the threads, having said this, it works very well on fine threaded screws, and in parts of my motorcycle where there is a lot of oil and grease.
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5.0 out of 5 starsExcellent, just as expected
By SK on March 17, 2015
Size: 6 Milliliter Verified Purchase
Used it last night on some suspension bolts on the front end of a Mercedes. It seems that the New England winter and the roads around Boston aren't getting along this year. This Loctite has a good consistency with good cling and coverage. I know that the nuts will stay put.
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5.0 out of 5 starslike oil. Still a good idea to clean the ...
By W on June 8, 2015
Size: 6 Milliliter Verified Purchase
Newer formulation is more tolerant of surface contaminants on "as received" fasteners, like oil. Still a good idea to clean the threads before applying this stuff though. Does a great job of sealing out moisture and preventing rust.
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Most Recent Customer Reviews

5.0 out of 5 starsThe only lube i need.

Best RC Lube you can buy.

Published 10 days ago by Amazon Customer
5.0 out of 5 starsLoctite 1330799 243 Blue Oil Resistant Product works as intended!...

It works, what else can I say, except the Packaging is probably more costly than the Product it contains! Recommended!

Published 15 days ago by A BUYER!
5.0 out of 5 starsperforms as advertised

If you don't know what this is...don't buy it.

Published 1 month ago by Adam Coss
5.0 out of 5 starsLoctite Blue Threadlocker - The best stuff on earth for keeping things...

Let's see...

Magpul vertical grip secured with Loctite Blue - check!

Vortex Strikefire secured within its high mount by Loctite Blue - check! Read more

Published 1 month ago by RatherLiveInKeyWest
5.0 out of 5 starsVery happy with product

Have used it on my air rifle scope and it has worked as described. Scope has held zero after 500 rounds. Very happy with product.

Published 1 month ago by J. C.
5.0 out of 5 starsFive Stars

Works perfectly.

Published 1 month ago by Mike
5.0 out of 5 starsFive Stars

Fixed my Mazda's crank keyway right up!

Published 1 month ago by Randal R.
5.0 out of 5 starsFive Stars

good stuff...just waht I needed...

Published 2 months ago by tambourinemonkey66
5.0 out of 5 starsMust buy for the gun enthusiast!

Finally found something that works. I hate the fact that my bolts/screws would get loose after a while, and leave a wax residue with the purple lock tight. Read more

Published 2 months ago by Matt
5.0 out of 5 starsIt works!

It works! I recommend!

Published 2 months ago by Donna Dennison

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