T Seals

T Seals

Prevent Rolling in the seal groove

Freudenberg Oil & Gas Technologies T-Seals are mostly used in stab and static applications for high cyclic pressure and temperature peaks of up to 15,000 psi and 210° C (410° F) or higher depending on housing design and material choice.

Traditional sealing solutions cannot provide adequate safety here. The separate PEEK anti-extrusion rings ensure high pressure resilience and excellent resistance to rolling and bunching. A standard range designed to suit AS568B O-ring housings is available to be retrofitted into original O-ring grooves in three standard lengths.

Used for many oil and gas applications in wellhead equipment, downhole and surface applications, Freudenberg Oil & Gas Technologies’ T seals are supplied in a wide range of materials. Custom sizes are also available.

  • Product Design

    • FO&GT engineered HPHT design
    • Materials consisted of FO&GT proprietary Gazguard FKM 029 material and Tetrex 4230 Glass Filled PEEK back up rings
    • Gazguard FKM 029 material is Norsok M710 qualified for both RGD and H2S resistance


    Product Validation Testing

    • Diametric extrusion gap of .003”
    • 1 hour pressure hold of 29,000 psi at 450 F
    • Test report available for download

  • Materials

    Spring seals from Freudenberg Oil & Gas Technologies are available in commercial grades like NBR, HNBR, FKM and our high performance Gazguard ® grades, engineered to offer superior performance in demanding applications, Norsok M-710 RGD, Norsok M-710 sour gas and ISO 10423 (API 6A) chemical ageing immersion and fixture testing and ISO 10423 F.1.11 pressure and thermal cycling testing.

  • Product Highlights

    • Three piece design, similar to O-Rings and backups
    • Used in dynamic and static services
    • Available in wide range of materials
  • Materials
  • Downloads

Custom and standard solutions are available in a wide range of high-performance proprietary and standard elastomer recipes, including:

Available downloads:

  • T-Seals Brochure

    English V-2-2016 available DOWNLOAD
  • Gazguard 728 FF/HH Certification

    English QMS-F30 Rev.5 locked DOWNLOAD
  • Tee-Seal Qualification Test

    English ER-15-078 Rev. 1 locked DOWNLOAD

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