Permatex high strength thread locker red formula is ideal for heavy-duty applications 10 mm to 25 mm and is especially well-suited for permanently locking studs and press fits. This high strength thread locker adds 3000 PSI holding power on slip and press fit assemblies and replaces set screws and snap rings. It also locks against vibration loosening. May require heat or special tools for removal. Applied as a liquid or gel, thread lockers are superior to conventional lock washers, nylon inserts and other mechanical devices because they secure the entire fastener assembly against loosening from shock and vibration by filling the space between threaded metal parts, curing to form a tough, adhesive bond and seal. They also seal the threads against leakage, preventing rust and corrosion.