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  • How to choose spring energized seals materials?
    • July 16. 2021

    JST's Spring Energized Seals, also called Lip Seals, are normally comprised of a machined polymer jacket and a spring energizer. They are available for rod, piston, and rotary applications, and can be manufactured in a variety of polymer materials depending on each application requirement. Our seals can be made of different PTFE materials, from Virgin PTFE or PTFE with fillers of di...

  • Application of Spring Lip Seal
    • September 15. 2022

    Spring lip seals have been used for many years. Spring lip seals are used in a manner similar to conventional elastomer seals, such as o-rings. Elastomer seals often fail due to conditions that often occur in their operating environment, such as chemical corrosion, extreme high or low temperatures, extrusion, friction, or compression set. However, spring lip seals have different structures and do ...

  • Water pump seal and its material selection
    • September 21. 2023

    A water pump seal is a mechanical component that helps to contain the liquid inside a pump and prevent it from leaking. The seal is usually located between the pump's rotating shaft and the pump housing. The purpose of a water pump seal is to provide a barrier between the liquid being pumped and the environment outside the pump, thus preventing leaks and contamination of the liquid. There are seve...

  • What operating conditions will affect the selection of sealing materials?
    • January 12. 2024

    Choosing the right seal for your application is not easy. If you want a reliable and long-lasting performance, it’s crucial to consider the following operational conditions. Working Pressure: High pressure applications require higher durometer seals to resist extrusion. Working Temperature: Different elastomers have different low and high temperature capabilities. Installation Parameters...

  • 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: ...

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