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Specialist Materials for Industry and Science

O-Rings & Seals

O-Rings & Seals

Apiezon Greases: O-Rings Sealants

Apiezon o-ring greases have been extensively used as sealants for a variety of temperature and vacuum applications thanks to their versatile nature.

Apiezon o-ring sealants not only enhance sealing performance, they also make o-rings easier to install and remove. Apiezon greases are silicone-free, hydrocarbon based products and are compatible with a wide range of o-ring materials including viton, silicone, nitrile (>30% nitrile content), nylon, polyurethane, polyethylene and polypropylene. They are also highly creep resistant.

Due to their hydrocarbon formulation Apiezon greases and oils are not compatible with EPDM (ethylene propylene diene M-class rubber), EPR (ethylene propylene rubber), Butyl rubber and PVC.

All Apiezon greases have excellent vapour pressure characteristics, an important factor for a variety of applications, including thin film deposition, as volatiles will not jeopardize the vacuum within the system or contaminate the thin film deposits.

In addition the Apiezon range offers Apiezon L, M and N o-ring greases, all of which have very low vapour pressures and are suitable for ultra high and high vacuum applications.

Benefits of Using Apiezon O-Ring Sealants and Greases

  • Excellent performance in a wide range of vacuum applications
  • Silicone-free, highly creep resistant
  • Solutions for a variety of temperatures
  • Stable, chemically inert and non toxic
  • Strong absorption properties ensuring powerful 'gettering' action
  • Easy to use and remove
  • 10 year shelf life
  • Proven track record including use by NASA, NATO, US & UK Military

For further information on the properties of Apiezon o-ring sealant and grease, or to speak to someone about any other product in the Apiezon range, contact our technical support team today.



  • Apiezon
  • Metrosil
  • Midel
  • Wolfmet

Products of M&I Materials Ltd.