Aromatic, Naphthenic and Paraffinic Process Oils in Rubber

These oils are used as Process Aids in rubber compounds.

  • Processing aid –
    • to assist mechanical breakdown
    • reduce uncured compound viscosity
    • permit incorporation of fillers
    • reduce internal friction in mixing, calendering and extrusion
    • reduce durometer or modulus

This blog will talk just a bit about some of the different types of oils in use in the rubber industry.


Pressure-Volume-Temperature (PVT) properties of oils place them in one of the following groups:

  • Paraffinic
  • Napthenic
  • Aromatic

Paraffinic Oils

  • good thermal and oxidative stability
  • good high-temperature viscosity
  • used in EP elastomers
  • Methane, Ethane, Propane

Naphthenic Oils

  • very available and inexpensive
  • yield medium viscosity
  • used in Nitriles and other elastomers
  • Cyclopentane, Cyclohexane

Aromatic Oils

  • used in Natural Rubber and Neoprene
  • Benzene, Toluene, Xylene

Thanks for reading.  For all your custom rubber needs, contact us today at Goodyear Rubber.

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