Synthetic Diester Oil

Synthetic diester oil is a lubricant designed to be used in reciprocating air compressors (although they are not recommended for breathing air applications).

They’re specifically designed to give equipment high-quality protection, even when it’s operating in conditions where standard mineral-oil products do not meet expectations. Compared to mineral oils, synthetic diester oil greatly reduces fire hazards and the potential for explosion. Also, due to its higher ignition temperature, it will greatly improve overall safety and performance. Diester oils are commonly recommended and approved by a variety of large compressor manufacturing companies.

We provide a variety of synthetic diester oils that can be used for all types of reciprocating compressors, both new and older models, and for applications for rotary vanes and screws.

There are many general uses that all grades of diester oil can fulfill:

  • It stays in a fluid state in low-temperature settings.
  • The operating temperature can remain low due to its high-quality thermal conductivity.
  • It has a roughly 20% lower friction coefficient.
  • It’s very stabile in high-temperature settings and won’t disassociate from stress.
  • It won’t shear during extreme stress or while it’s subjected to heavy loads due to its high mechanical stress resistance.
  • It’s better for metal wetting due to its overall reduction in metal to metal wear-polar properties.
  • It has better rust and corrosion resistance due to its high-quality demulsibility characteristics, so moisture will separate readily.
  • It’s also much more energy efficient.

Diester oil is specifically designed to be used as a cylinder lubricant in a crankcase and can be used with virtually all types of elastomers that are commonly used in pumps and compressors, including crankcase paint.

Grades and their Application

100 Grade Diester Oil – recommended applications:

  • Ball and Roller Bearings
  • High-Temperature Lubrication
  • Low-Temperature Lubrication
  • Rotary Vane Compressors
  • Reciprocating Compressors
  • Also, general uses for applications that require ISO 100 lubricant

125 and 150 Grade Diester Oil – recommended applications:

  • Ball and Roller Bearings
  • High Temperature Lubrication
  • Low Temperature Lubrication
  • Rotary Vane Compressors
  • Reciprocating Compressors
  • Also, general uses for applications that require ISO 150 lubricant

32 Grade Diester Oil – recommended applications:

  • Some rotary screws and vane compressors
  • Low-temperature lubrication
  • High-temperature lubrication
  • Centrifugal compressors
  • Also, general uses that require ISO 32 lubrication.

68 Grade Diester Oil – recommended applications:

  • Ball and roller bearings
  • Rotary screw and vane compressors
  • Mist lubrication systems
  • High-temperature lubrication
  • Low-temperature lubrication
  • Other applications that require ISO 68 lubricant

Compatibility

Synthetic diester oil is compatible with the following materials:

  • Celcon
  • High Nitrile Rubber
  • Teflon
  • Nylon
  • Oil-Resistant Alkyd
  • Viton
  • Epoxy Paint

 

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Stevenson Oil