Vibra-Tite threadlockers come in different grades for different applications. At this point you are probably asking yourself which one do I use? Picking the right threadlocker can be as easy as picking the correct color. I have broken it down into categories to make it much more simple.
Permanent (RED): A heavy duty Threadlocker. Permanent Strength Threadlockers are designed to provide medium-high strength threadlocking where controlled torque / tension is required. Material lubricates during assembly, securing parts with medium-high strength retention allowing disassembly when required.
High Strength (RED): High Strength Threadlockers are a general purpose adhesive for permanent threaded assemblies. 140 locks fasteners up to 1″ in diameter sealing against leakage and corrosion. It resists attack from most fuels, lubricants and most industrial gases.
Medium Strength (Blue): Medium Strength (Removeable) Threadlockers are a general purpose product. 121 will hold all metric, imperial or conventional sized nuts and bolts, meeting the requirements of over 80% of fastening applications. It does not run off or drip and does not migrate after assembly due to its thixotropic chemistry. Once applied, parts install easily, lubricated by the adhesive. Fasteners can be removed with hand tools.
Low Strength (Purple): Low Strength Threadlockers are a thixotropic anaerobic threadlocker designed for easy disassembly of threaded components. The anaerobic nature cures only when confined between two metal parts. The products low removal torque allows easy disassembly yet provides vibration and shock resistance.
So know we now how easy it is! Just remember the colors and you will know which threadlocker you will need. Remember to clean and dry all parts before applying the threadlocker. Always tighten to the recommended torque level of the manufacture.