The use of anaerobic adhesive for locking and preventing loosening is because the adhesive can fill all the gaps in the threaded engagement and squeeze out the air during "anaerobic curing", thus forming insoluble polymers on the threaded mating surface. This was the earliest application direction of anaerobic adhesives. The threaded engagement can be classified into removable (241) and non-removable (271) with conventional tools. The method of locking and preventing loosening is simpler and more reliable than commonly used mechanical methods, therefore it has been widely applied.
