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    Spring Seals - Precision Polymer Engineering
    "S seals," also known as "spring seals," are a type of elastomeric seal with embedded springs that prevent extrusion, making them suitable for high-pressure applications like those found in the oil and gas industry. They are a high-performance alternative to traditional seals like T-seals and O-rings, offering an integrated, one-piece design for easier installation and greater stability. They are primarily used for static applications but can be used in some limited dynamic services.
     
    This video explains the concept of oil seals and how they prevent leaks in mechanical systems:
    1m
    JAES Company
    YouTube · Sep 6, 2024
    Key features and benefits
    • Integrated spring design:
      The two embedded springs provide stability and resistance to extrusion, allowing the seal to maintain contact under high pressure. 
    • One-piece construction:
      This design simplifies installation and eliminates the potential for problems associated with multiple-component seals. 
    • High-pressure performance:
      S-seals are engineered to seal pressures exceeding 15,000 psi and can handle large extrusion gaps. 
    • Material flexibility:
      They can be manufactured from a wide range of elastomers to suit various media and temperatures. Common materials include NBR, HNBR, FKM, and EPDM. 
    • Versatile applications:
      They are commonly used in wellheads, downhole tools, valves, and connectors, primarily in static applications, though some dynamic uses are possible with specific spring materials. 
    • Alternative to traditional seals:
      They are a viable and often superior replacement for T-seals and O-rings in demanding applications. 
    • S Seals - CDI Products
      Thermoplastic anti-extrusion spring option available for dynamic applications.
      CDI Products
    • S Seals - Freudenberg Flow Technologies
      Test certification is available for download to registered users. Benefits: Alternative engineered seal design to using T Seals or...
      Freudenberg Oil & Gas
    • S-Seals | Plastics Injection Molding Services - CTG, Inc.
      Design Principle. An S-seal consists of a thick ring of elastomeric material, in which two circular springs are embedded. These sp...
      CTG, Inc.
    • S-Seals
      The S-Seal is a premium elastomeric seal for oilfield applications. The S-Seal was designed to be a high performance improvement o...
      DXP Enterprises
    • S-Seal Profile for HTHP Sealing (PSSP) | Parker NA
      S-Seal Profile for HTHP Sealing (PSSP) * Maximum Operating Pressure: 2000 to 7000 psi. * Minimum Operating Temperature: -65 °F. *
      Parker NA
    • S Seals
      Nov 18, 2019 — Similarly, the best material to use for the internal springs depends on the severity of the conditions that the seal w...
      Sigma Seals & Gaskets
    • Spring Seals | S Seals for Oil & Gas | PPE LLC
      Spring seals (also known as S-seals and all-in-one T-seals) comprise of a high modulus elastomer and two integrated anti-extrusion...
      Precision Polymer Engineering
    • S Seal
      S Seals are well suited for sealing wellheads, connectors, downhole tools, high pressure valves and other demanding oil and gas ap...
      Global Seals Technologies Pte Ltd
    • What Are Oil Seals Made Of? - Chemistry For Everyone
      Jul 5, 2025 — What Are Oil Seals Made Of? In this informative video, we'll discuss the fascinating world of oil seals and their essen...
      YouTube

    Related Links

    • S Seals - CDI Products
      Thermoplastic anti-extrusion spring option available for dynamic applications.
      CDI Products
    • S Seals - Freudenberg Flow Technologies
      Test certification is available for download to registered users. Benefits: Alternative engineered seal design to using T Seals or...
      Freudenberg Oil & Gas
    • S-Seals | Plastics Injection Molding Services - CTG, Inc.
      Design Principle. An S-seal consists of a thick ring of elastomeric material, in which two circular springs are embedded. These sp...
      CTG, Inc.
    • Show all

    Related Links

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      S Seals


      CDI Products
      https://www.cdiproducts.com › solutions › product-types
      CDI Products
      https://www.cdiproducts.com › solutions › product-types
      S-Seals are a one-piece, advanced replacement for traditional seals, with a metal spring, handling up to 15,000 psi and 500ºF, and can bridge large extrusion ...

      S-seals


      SKF
      https://www.skf.com › industrial-seals › wellhead-seals
      SKF
      https://www.skf.com › industrial-seals › wellhead-seals
      SKF S-seals are made to perform in the toughest situations, delivering reliable high-pressure static sealing.

      Custom Engineered S-Seals


      Parker US
      https://www.parker.com › Parker-com › Literature
      Parker US
      https://www.parker.com › Parker-com › Literature
      PDF
      Apr 1, 2018 — Parker is the premier manufacturer of S-Seals for oil & gas equipment. – and the only one to offer S-Seals from 1-1/2” to over 60” in diameter.
      14 pages

      S Seals


      Freudenberg Oil & Gas
      https://www.ffltech.com › products › detail › s-seals
      Freudenberg Oil & Gas
      https://www.ffltech.com › products › detail › s-seals
      S Seals use a spiral spring for high pressure resilience, are used in high pressure applications, and are an alternative to T Seals and O-Rings.
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      • PAC S-40 Open Seals For Plastic Strapping, Width 1/2, 1000 Per Case.
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      Images
      S-seals | SKF
      S-seals | SKF
      SKF
      S Seals – CDI Products
      S Seals – CDI Products
      CDI Products
      S-Seals | Plastics Injection Molding Services | CTG Inc.
      S-Seals | Plastics Injection Molding Services | CTG Inc.
      CTG, Inc.
      What Is S Seal?
      What Is S Seal?
      JST-Seals
      Spring Seals | S Seals for Oil & Gas | PPE LLC
      Spring Seals | S Seals for Oil & Gas | PPE LLC
      sa.prepol.com
      S Seals: Freudenberg
      S Seals: Freudenberg
      Freudenberg Flow Technologies
      S Seals - Sigma Seals & Gaskets
      S Seals - Sigma Seals & Gaskets
      Sigma Seals & Gaskets
      Spring Seals - Precision Polymer Engineering
      Spring Seals - Precision Polymer Engineering
      Precision Polymer Engineering
      S Seals – CDI Products
      S Seals – CDI Products
      CDI Products
      All images
      Show more images

      Spring seal S-seals | Static sealing products


      James Walker
      https://www.jameswalker.biz › our-products › elastomers
      James Walker
      https://www.jameswalker.biz › our-products › elastomers
      S-Seals (spring seals) are for high-pressure oilfield equipment, designed for static sealing, and are effective with large extrusion clearances. They are ...

      S-Seals | Viton O-Ring


      GMORS
      https://www.gmors.com › product › s-seals › detail
      GMORS
      https://www.gmors.com › product › s-seals › detail
      GMORS S Seals are well suited for sealing wellheads, connectors, downhole tools, high pressure valves and other demanding oil and gas applications.

      Spring Seals and FS Seals


      Precision Polymer Engineering
      https://www.prepol.com › downloads › spring-se...
      Precision Polymer Engineering
      https://www.prepol.com › downloads › spring-se...
      PDF
      Spring Seals (also known as S-Seals) are double acting elastomeric seals for static applications, featuring a pair of integrated.

      What Is S Seal?


      JST-Seals
      https://www.jst-seals.com › blog › what-is-s-seal_b53
      JST-Seals
      https://www.jst-seals.com › blog › what-is-s-seal_b53
      S Seals are used for sealing in oil and gas, using metal springs as an alternative to T Seals or O-Rings, and are designed as a replacement.

      S-Seals | Plastics Injection Molding Services - CTG, Inc.


      ctgasket.com
      https://www.ctgasket.com › product › s-seals
      ctgasket.com
      https://www.ctgasket.com › product › s-seals
      S-seals are reliable under extreme conditions, easy to install, and have a thick elastomer with embedded springs, designed to resist twisting and extrusion.

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