Industrial Greases

Industrial greases are thickened gels that consist of natural, synthetic, or semi-synthetic substances. They do not run off surfaces and are used in a variety of lubrication, sealing, and exclusion applications. There are several basic types of products. Dielectric greases are designed to exclude water and reduce friction, binding, and wear. Vacuum greases are suitable for vacuum sealing or diffusion pump applications. Heat transfer products carry thermal energy in process heating and machine cooling applications. Micro-dispersion greases contain tiny particles of boron nitride (BN) graphite, polytetrafluoroethylene (PTFE), or molybdenum disulfide in a mineral, petroleum or synthetic oil base. Lapping or polishing compounds contain abrasive powders. High water content fluids (HWCF) and high water base fluids (HWBF) are used in industrial greases where leakage is likely to cause ignition. Wax, paraffin and stearate compounds are well-suited for anti-corrosive and anti-static applications. Many industrial greases are silicone-based or thickened with soap. Typically, these grease soaps contain a sodium or calcium base and lithium or aluminum complexes. 

Industrial greases vary in terms of thermal conductivity, dielectric strength, specific gravity, kinematic viscosity, operating temperature, boiling point, and flash point. Thermal conductivity is a measure of the ability to transfer heat. Dielectric strength is the maximum voltage field that a material can withstand before electrical breakdown occurs. Specific gravity is density normalized to water or another standard. Kinematic viscosity is the time required for a fixed amount of grease to flow through a capillary tube under the force of gravity. Units of measure include stoke, centistoke (1/100 of stoke) and Saybolt universal seconds (SUS). Operating temperature is a full-required range. Boiling point is the temperature at which industrial greases boil. Flash point is the lowest temperature at which substances produce sufficient vapors to form an ignitable mixture in air near the surface. Fire point and autogenous ignition are additional considerations when selecting fire resistant greases. Fire point is the lowest temperature at which industrial greases produce sufficient vapors to form a mixture in air that continuously supports combustion after ignition. Autogenous ignition (AIT) is the temperature at which ignition occurs spontaneously.  

Industrial greases are used in a variety of applications and industries. Some products are designed for aerospace, automotive, marine, or military applications. Others are suitable for use with bearings, combustion engines, processing equipment, compressors, piston pumps, gears, and final drives. Passivators or deactivators are applied to internal or machined surfaces. Greases with extra pressure (EP) additives form a film to prevent sticking or seizing under heavy loads. Similarly, products with release agents prevent other materials from sticking or adhering to underlying surfaces. Industrial greases can inhibit oxidation, corrosion, or microbial growth; provide sealing or barrier functions; or dampen shock and vibration. Biodegradable products are designed to break down into harmless chemicals when released into the environment. Fire resistant greases have high flash point, fire point and auto-ignition (AIT) temperatures. Non-foaming characteristics are achieved through the use of additives that break out entrained air. Industrial greases that are rated for food, beverage, and pharmaceutical applications are also available.

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Part Numbers for Greases