The primary function of the pastes is in areas of application which cannot be handled by grease or oil. For example, at slow speeds an inadequate lubricant separation film is formed in the contact zones of the moving parts. Metal contact and hence higher wear occur (scuffing). This wear can be avoided or reduced by the use of solid lubricants. Pastes with white solid lubricants play a special role. Solid white lubricants are various inorganic compounds which are capable of forming reactive layers on the metallic base material in tribo-contact under specific pressure and temperature conditions. These layers reduce friction and protect against wear, even under extreme loads.