The Difference Between Blue, Green and Purple Threadlockers

Ever get confused about which threadlocker to use? Do you know what the differences are between the blue, green and purple threadlocker? You aren’t alone, here at Henkel we get asked this question a lot and here we can tell you the difference.

Our products are available in many different grades to cater to a broad array of applications, from auto maintenance and boat maintenance to a wide range of household product repair. These different grades are colour-coded to help you distinguish one threadlocker from another.

The colour refers to the actual substance, but all the bottles are red in colour. The red bottle is actually a LOCTITE a trademark. It’s what visually distinguishes LOCTITE threadlockers from any other brand.

LOCTITE^® Blue Threadlocker

LOCTITE^® Blue Threadlocker is medium strength. Again this product fully cures in 24 hours and can be disassembled with hand tools. This product is available in a liquid and a semisolid.

You might also be interested in: Blue Threadlocker Basics

LOCTITE^® Green Threadlocker

LOCTITE^® Green Threadlocker; is high strength. It is recommended where a more permanent lock is required. It cures within 24 hours and can be removed with heat and hand tools.

LOCTITE^® Purple Threadlocker

LOCTITE^® Purple Threadlocker, also known as LOCTITE 222, has become one of our most successful products. LOCTITE 222 cures within 24 hours. It can also be used on low-strength metals such as aluminium and brass. This offers a lot of flexibility to the user.

Find customer testimonials and more information on our purple threadlocker in When and Why to Use Purple Threadlocker.
 

All LOCTITE^® Threadlockers

Alll LOCTITE^® Threadlockers have a good temperature resistance, LOCTITE 243 and LOCTITE 270 have a temperature range of -55°C to 180°C and LOCTITE 222 has a temperature resistance of -55°C to 150°C. Threadlockers were LOCTITEs first product line. They combine a mix of complex chemistry and engineering.
Simply put, this product is an anaerobic adhesive applied by drops to the threads of fasteners. It then cures to a hard thermoset plastic that locks the threads together. They are used only for metal-to-metal applications.