Dielectric greases and insulating fluids have a high dielectric strength and are designed to reduce friction, binding and wear. Dielectric greases and insulating fluids exclude water and are used in transformers, capacitors, electric discharge machining (EDM), and electrical devices.
Dielectric greases and insulating fluids include a variety of components for lubricating, coating, and sealing applications. Dielectric greases and insulating fluids also provide oxidation and heat stability, and can typically withstand a wide temperature range without breaking down. Dielectric grease is used to dissipate heat from some electronic components, and is also useful in lubricating mechanisms such as slide contact switches and relay contacts. Dielectric greases and insulating fluids used in electrical transformers also can include other components to enhance the life and function of the transformer oil. Insulating fluid used in transformers may also contain metal passivators or deactivators to prevent the dissolution of metals into the transformer oil, such as copper, bronze or iron.
Similar to dielectric greases and insulating fluids, high water content fluids (HWCF) are also used to provide fire resistance and offer cooling properties to friction-based industrial processes. High water content fluids, or high water base fluids (HWBF), are water soluble fluids with very low concentrations of additives including petroleum oil, synthetic fluids, and inhibitors such as biocides or fungicides. High water based fluids are used in many hydraulic applications where a leak of hydraulic fluid may pose a fire hazard. Other dielectric greases and insulating fluids include grease soaps and greases with extra pressure (EP) additives, such as molybdenum disulphide. Greases with extra pressure (EP) additives form a film to prevent sticking or seizing under heavy loads, and are often used in vibrating or oscillating applications. Grease soaps are greases that are thickened with soap. They typically contain a calcium or sodium chemical base with lithium or aluminum additives.
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Metalworking Lubricants, Coolants and Fluids
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Synthetic Oils, Greases, and Lubricants
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