Anaerobic Adhesives are used as 1-component-system. Assigned monomers of (modificated) acrylic acid esters harden out similarly like the methylmethacrylates by a radical chain mechanism. The curing process is only possible under exclusion of oxygen (anaerobic). This mechanism results at the same time in the main application. If anaerobic adhesives will be used in a close metal gap by exclusion of oxygen, the hardening will be initiated. By this characteristic long open times are possible.
Anaerobic adhesives are designed for the use as Thread locking, they prevent loosening due to vibration or thermal expansion on all metal threaded fasteners and provide corrosion resistant seals. They are used as pipesealing products and found in various industries including fire protection, a third application as gasketing products include high viscosity sealants which are designed for specific performance requirements for gasketing applications.