Mechanical locking devices (such as split washers, nylon nuts, flat washers) were invented to solve the common problem of loosening that happens in most threaded assemblies. The reality is that they don’t maintain clamp load as assemblies “locked” with these devices often loosen under vibration, thermal expansion and/or improper torque.
BENEFITS OF THREAD LOCKER
Locks mating threads to prevent loosening from vibration & shock
Seals against fluids & corrosion
It provides lubricity to achieve controlled strength during assembly1.
Prevents galling and seizing for reliable disassembly
RED, BLUE OR PURPLE THREAD LOCKER? HOW TO CHOOSE THE RIGHT ONE?
There are 3 things to consider when choosing a thread locker and color is key, as it represents strength:
1. Strength
Low Strength (Purple)
Medium Strength (Blue) – most applications can be served with blue thread locker
High Strength (Red)
2. Fastener Size
From < ¼” (6 mm) fasteners on up, there’s a thread locker
3. Application Methods
Pre-Assembly: Most liquid thread lockers are designed to be applied at the moment parts are assembled
Post-Assembly: Wicking grade formula can be applied on parts that are already assembled
