Loctite Threadlocker Red 271 is designed to lock and seal threaded fasteners permanently and prevent loosening from vibration. Ideal for fasteners up to 1” (25mm), this unique formula is great for engines, machinery, and vehicles for valve covers, water pumps, and alternators. Loctite Threadlocker Red 271 is moisture resistant and protects threads from leaks, rusting, and corrosion while eliminating the need to stock up on expensive lock nuts and washers. Fast and easy to use, this heavy duty, high-strength threadlocker sets in just 10 minutes and fully cures in 24 hours. Loctite Threadlocker Red 271 is a permanent solution for locking and sealing threaded fasteners and is only removable once cured by heating up parts to 500°F (260°C).