Our 271 Thread Locker contains acrylates, co-accelerators, initiators. It can fix screws, nuts, and metal fasteners to prevent loosening due to vibration. Its use method is very simple: Remove moisture, grease and other dirt from the bottom of the screw. Apply the thread locking agent evenly on the thread and tighten the nut. Initial cure for 20 minutes, then allow to fully cure within 24 hours. Using threaded lock cylinder instead of solid washer, close contact, good sealing, effectively prevent water leakage.