Loctite 246 Threadlockers, Medium Strength/High Temperature Blue, opaque, thixotropic, dimethacrylate ester acrylic threadlocker. Particularly suitable for heavy duty applications, such as bolts used in transmissions, construction equipment, or railroad assemblies. to heavy shock, vibration, and stress levels. Thixotropic nature reduces the migration of liquid product after application. to exposure to elevated temperatures Pack of 1