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  • Choose S seal or O ring for Sealing of Wellhead Casing?
    • September 24. 2021

    S seal and O ring both can be used for wellhead casing but they have different functions and suitable for different working conditions. O ring is a static seal. It is suitable for lower pressure, small groove gap and smooth groove surface. O ring is usually combined with back up ring. But in hostile environment, such as H2S, high pressure, high and lower temperature, rough groove surface, o ring w...

  • What kind of seal will be used for wellhead equipment?
    • December 14. 2021

    For wellhead casing head, tubing hanger, JST provides elastomer seals including FS seal, S seal, P seal, O ring, MEC metal end-cap seal and lock screw packing. These seals are essential elements in the integrity and functionality of wellhead equipment. We developed HNBR, FKM, AFLAS and other material accordingly which have high pressure resistance, good sealing characteristics. 1. Materials tested...

  • RGD Seals & AED Seals
    • April 24. 2022

    RGD is known as Rapid Gas Decompression, AED is known as Anti-Explosive Decompression. RGD (Rapid Gas Decompression) or AED (Anti-Explosive Decompression) is a failure mechanism of O-rings and elastomer seals which is caused by the rapid reduction in pressure of the gaseous medium. When the pressure is released, the gas penetrating into the elastomer seal will expand violently, which in turn will ...

  • WHY SHELF LIFE MATTERS A LOT TO INDUSTRIAL SEALS?
    • June 02. 2022

    There are many reasons for seal failure, including long-term storage in less than ideal conditions. Rubber may crack, harden, soften or degrade, making it unsafe for its intended use. Most seals have a widely accepted shelf life, which helps manufacturers prevent catastrophic failures caused by old seals. Maintaining the seal throughout its intended shelf life requires providing a storage environm...

  • 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 ...

  • What is the Right Surface Finish for Your Seal's Mating Hardware?
    • November 04. 2022

    If the sealing system on your equipment fails prematurely or cannot work normally, you may immediately check the following points: Whether the seal is defective; Whether the sealing material can not withstand the temperature or pressure requirements of the application; Whether the size is appropriate or the extrusion level is verified; However, the inspection of mating metal components is easy to ...

  • Getting started to know more about the seals
    • August 17. 2023

    Grooves and Glands The physical space occupied by the seal is usually referred to as a groove, but it can also be referred to as a gland. In most cases, it’s a rectangular groove cut into the hardware whether it be on a piston, in the housing for a rod, or in the face of two mating surfaces. Compared to O Ring and elastomer seals, PTFE and polymer seals are critically dependent on hardware conditi...

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