Threadlockers and retaining compounds have been around for decades. Officially known as anaerobic adhesives, the materials cure in the absence of air, filling gaps between components.
The one-part formulations are ideal for mechanical fastening applications. Anaerobics are commonly used for locking tasks that involve bearings, bolts, nuts, pulleys, screws or shafts. In addition to tight bonds, they also have sealant properties and can protect bolted assemblies from liquid and gas corrosion.