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Chemraz® 694

Exceptional Chemical Resistance and Best-in-Class in High Temperature Steam Environments


Greene, Tweed developed Chemraz® 694, a perfluoroelastomer, for exceptional chemical resistance and best-in-class performance in high temperature steam environments, including Steam Assisted Gravity Drainage (SAG-D) and other enhanced oil recovery (EOR) applications requiring steam injection. In addition, Chemraz 694 can be utilized in typical Oilfield applications where sustained high temperature resistance is a requirement.

With the increased use of steam injection as an EOR technique in maturing, as well as heavy oil fields, Greene, Tweed has responded to the market demand for reliable and extended downhole service life capacity for sealing materials for that environment. Greene,Tweed undertook a stringent process to develop an FFKM which would retain its physical properties in a steam environment, thus meeting customer requirements for a more reliable sealing solution. Chemraz 694 outperformed competitor materials after an extended time at 500°F (260°C) in steam and short term exposure to a peak excursion at 600°F (316°C). Other comprehensive testing regimes carried out under a variety of conditions have shown Chemraz 694 to be the “go-to” solution for critical steam environments.

In addition to best-in-class performance in a steam resistance, Chemraz 694 also delivers exceptional chemical resistance to well fluids and gases commonly found in the Oil & Gas industry including amine-based inhibitors, Toulene, Xylene, and other reservoir fluids including H2S. Chemraz 694 is rated for a working temperature range of 10°F to 600°F (-12°C to 316°C). In addition to SAG-D applications, the use of Chemraz 694 can be considered for steam injection applications such as Cyclic Steam Stimulation (CSS) and artificial lift methods, including electrical submersible pumps (ESPs).

Features & Benefits

  • Retains physical properties in a hot steam environment, thus
    reducing mean time between failure (MTBF) of elastomeric
    components in critical steam environments
  • Superior resistance to hostile reservoir chemistries, drilling fluid
    additives and production chemicals for improved elastomeric
  • Excellent compression set and thermal shock resistance for
    increased reliability of components used in critical steam and high
    temperature environments

Chemraz 694 is available in O-ring, Vee ring, G-T® ring and custom