High and medium strength gel threadlocker JUNE Kimball Midwest's new Torque-Lok Gel Threadlocker comes in an economical no-mess gel-pump dispenser that allows for ease of use and application control. The formula has a wide temperature range of -65°F to +300°F, and is offered in Medium Strength Blue and High Strength Red. Medium Strength Blue is ideal for locking fasteners from 1/4" to 3/4" in diameter, and is removable with hand tools. High Strength Red permanently locks threaded fasteners and is optimal for all fasteners up to 1-1/2" in diameter where vibration and shock are encountered. The high strength formula adds up to 3000 PSI shear strength for superior hold.