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  • Gate valve seal assembly for fracking valve
    • September 22. 2022

    In the oil and gas industry there is a practice called fracking, to speed up the migration of gas and petroleum fluid from source rocks or reservoir rocks. The fracking is an oil and gas well stimulation measure with broad application prospects. At present, hydraulic fracturing is the main form of natural gas exploitation. Water (fracturing fluid) mixed with chemical substances is used to inject i...

  • Application of carbon graphite seals
    • December 06. 2022

    The seals made from carbon graphite materials have the common advantages of both metal and non-metallic materials. Its material characteristics includes excellent self lubrication, chemical stability, high thermal conductivity, high temperature resistance, corrosion resistance, high wear resistance, low expansion and easy maching. These characteristics of carbon graphite are necessary for pure wat...

  • Elastomer and Polymer Sealing Solutions
    • December 07. 2023

    In the oil and gas field, seal will be exposed to high temperatures and pressure ranges means that standard polymer seals are unable to meet the customer requirements. JST seal materials including: Perfluoroelastomers (FFKM) Fluoroelastomers (FKM) HNBR Aflas PTFE PEEK UPE Elastomer and Polymer materials for the Oil and Gas industry Applications: 6A gate valve 6D ball valve Wellhead casing hanger o...

  • Spring energized lip seals for ball valve in oil and gas industry
    • February 26. 2024

    JST designs and manufactures spring energized lip seals for ball valve. In this article, we will introduce some lip seals used for different sealing application in ball valve. Lip seal type FVR is used for ball valve seat sealing. As shown in picture Fig-1, the FVR lip seal contains four parts. 1- T ring (material: carbon filled PTFE), 2- U ring (material: carbon filled PTFE), 3-Spring (material: ...

  • What are the key considerations for designing cryogenic seals for LNG valves?
    • September 12. 2024

    Sealing at cryogenic temperatures has its own unique set of challenges. To provide superior protection against leakage in cryogenic valves for LNG, cryogenic seals should be designed with the following properties in mind: Jacket material that tolerates thermal cycling A spring energizer to compensate for shrinkage Anti-extrusion lip geometry JST has a wide range of solutions for cryogenic sealing ...

  • JST's Solutions for Cryogenic Sealing Applications
    • October 08. 2024

    Sealing for API 6D ball valve and LNG at cryogenic temperatures has its own unique set of challenges. JST has a wide range of solutions for cryogenic sealing applications. The range includes valve stem seals and valve seat seals. Compounds and designs could vary as per specific applications. The material mainly includes polymer jacket (virgin PTFE, filled PTFE, TFM, PCTFE, UHMW-PE, PEEK, etc.) and...

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