Question

What is the difference between red and blue Loctite?

Answer 1

Threadlocker, also known as thread-locking fluid, is an adhesive used to prevent threaded fasteners from loosening. It may also be used to seal threads and prevent corrosion. Typically referred to as its original brand name Loctite, threadlocker is supplied as a thin fluid in a bottle.Nov 12, 2019

Why is threadlocker used on fasteners? | Fastener Engineering

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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: \u201cBlue, easy to make new.