Red Boltlocker 250 ml BottleSold in sets of 1 Dynatex Red High Strength Threadlocker is a single component, anaerobic liquid which cures when confined in the absence of air between close fitting metal surfaces. Dynatex Red High Strength Threadlocker is a high strength anaerobic threadlocking material that cures between engaged threads to form a unitized assembly that resists virtually all leakage, shock and vibration. Ideal for all inch to inch diameter nut and bolt assemblies