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Has the choice between threadlockers got you confused? Our handy guide will explain the key differences between red and blue threadlockers and offer application and removal tips. We’ll get you set up with the best Loctite threadlocker for any job!
Loctite threadlockers are primarily designed to prevent fasteners from leaking or loosening from vibration. The difference between red and blue threadlocker is a matter of strength and removability. Loctite threadlocker blue is designed to easily be replaceable with common tools, whereas red is a more permanent fix. If you have trouble keeping it straight, here’s a helpful rhyme to jog your memory: “Blue, easy to make new. Red, full strength ahead!”
For a hold that can be easily removed, Loctite Threadlocker Blue 242 is the hero. It’s perfect for motorized and nonmotorized parts that need occasional servicing, like car parts (oil pans, water pumps, etc), or even motorized yard equipment, bicycles, furniture and much more.
For parts that need a more permanent hold, like structural bolts in a home, auto suspensions and frames, or any other heavy machinery, Loctite Threadlocker Red 271 is the answer. This industrial grade threadlocker packs a stronger punch than the blue and can only be removed by heating the parts to 500F.
The application technique is the same for both red and blue Loctite threadlockers. Here’s what you do.
Removing threadlocker varies depending on the type you’re working with. For Loctite threadlocker blue, simply remove the bolt and nut with normal tools.
Loctite Threadlocker Red 271, is formulated to be a high strength thread locker, meaning it will require the localized heat of a blowtorch to weaken the bond. Here’s how it’s done.
You’ll need:
Working in a corrosive environment? Even more reason to use a threadlocker. If the nut and bolt are submerged in water, the area covered with threadlocker will prevent corrosion and remain in working condition. This will make removal easier in the long run by preventing rust buildup.
