What is the difference between GREASE and an ANTI SEIZE? The answer is in their end product’s functionality and durability. In extreme high temperatures, most screw joints require a special maintenance procedure through the use of anti-seize products. Most first-hand machinery requires some sort of lubricant grease to be applied during the initial assemble. However these grease are only suitable to be applied on equipments that are mostly used in simple machineries. They act as a short-term tightening agent for small bolts and screws whereas ANTI SEIZE are made to protect long-term internal components in complex machineries. 

 

Two Most Common Seizing Problems
 

1) Galling - Cold welding may cause damage to the threads

Galling is a form of adhesive wear that occurs when two metals are in contact and compressed against one another which builds up friction. The rough friction then causes heat that may lead to some parts of the metal surface to be welded. Galling is a major issue in threading assembling especially during the fastening process for threads, many of them may break or torn resulting on having those bolts and nuts from freezing or tightening up. 

 

2) Fretting - Bolt fatigue after oxidation on friction area (due to oscillation)

Fretting wear or fretting corrosion occurs when two metal surfaces are experiencing repeated relative motion by vibration (oscillation) and put under load. The vibrating movement causes rupture in the materials which produces debris. If fretting occurs in a corrosive surrounding, oxidation on the wearing surface may cause corrosion. In normal condition, fretting may lead to metal fatigue and decrease the strengths of a material element.