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Parker’s S-Seal is engineered to meet the rigorous sealing challenges encountered in high pressure and high temperature (HTHP) Oil & Gas applications. Increasingly deeper drilling means application pressures, once considered high at 5,000 psi, now approach up to 20,000 psi. Traditional elastomer and backup ring-type seals, which sufficiently seal at lesser pressures and temperatures, will extrude at elevated temperatures and pressures. Parker's high performance S-Seal incorporates two non-extrusion devices and an elastomer sealing element in a single-piece construction, offering bi-directional sealing while incorporating a simple symmetric profile. The non-extrusion devices, utilizing an endless coiled spring on both sides of the sealing element, allow large extrusion gaps to be bridged at high pressures.

Spring Materials
Non-extrusion spring materials for applications which are basically static include stainless steel, Inconel® and phosphorous bronze. Non-extrusion springs are also available in virgin PEEK which expands the use of the S-Seal to include dynamic applications.

Elastomer Materials
A wide array of elastomer options to withstand high temperature and chemical compatibility requirements of down-hole environments include HNBR, FKM, FFKM, Aflas® and geothermal EPDM.

Additional features of Parker’s S-Seal include:

  • Designed to fit existing O-ring rod and bore diameters
  • Withstand high pressures of 20,000 psi and above
  • Anti-extrusion springs allow much broader clearances between mating parts
  • Integrated over-molded-spring backup system means the backup will not fall out of the seal when blind stab-in conditions exist, saving time and money