GLUEDEVIL THREADLOCKERS are available in a variety of different grades which are color coded to enable the consumer to be able to differentiate from one threadlocker to the next. GLUEDEVIL PURPLE THREAD LOCKER posses the lowest strength when compared to the other thread lockers. Aimed at precision metal fasteners lower than 3/4. Safeguards threads from rust and corrossion. Easily removable with hand tools. Temp. range from -65 -300 degrees F. Cure speed 20 mins. Full 24 hrs.