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  • What is NORSOK M-710?
    • June 21. 2021

    The NORSOK standards have been developed by the Norwegian petroleum industry to ensure adequate safety, value adding and cost effectiveness for existing and future petroleum industry developments.   The intent of NORSOK M-710 standard and qualification process is to assure that non-metallic sealing material manufacturers have sufficient understanding and experience with the applicable materia...

  • 13” Elastomer S seal PR2 Test
    • July 22. 2022

    JST 3" External S seal passed PR2 test, as well as 13” S seal. JST S seal use material HNBR85+316SS, BV witnessed HNBR S seal at working condition -29°C  to +121°C, 10000PSi, product design refer to API 6A -annex F. The material HNBR(H3385) meet API immersion test, RGD test. The Inspector also applied following activities: 1: Reviewed the test certificate of raw material HNBR ( H3385), the Re...

  • Vee Packing with Various Material
    • August 12. 2022

    Vee packing is used for downhole equipment in oil field. JST provides chevron and HNBR Vee packing. The Vee packing group is composed of a top ring, a bottom ring and several intermediate center rings. V-Packings is ideal for medium and heavy duty applications. V-packing can withstand low pressure and high pressure when working under the most extreme conditions. JST standard Vee Packings materials...

  • Do you know wiper plug?
    • February 24. 2023

    A wiper plug typically has an elastomeric body mounted on a mandrel and elastomeric external fins that bear against the inner wall of the casing. The fins wipe mud solids and other accumulated debris off the inner wall of the casing. The effectiveness of a wiper plug relies on at least one fin creating a seal against the surrounding casing or liner, and the body sealing against the mandrel. The el...

  • The Application of Lockdown Screw Seals
    • October 25. 2023

    Lockdown screw seals have been widely used in geothermal applications as they provide superior performance over traditional metal pressure seals. These seals are designed to handle high pressure and high temperature conditions, making them an ideal choice for geothermal applications. Lockdown screw seals consist of HNBR (Hydrogenated Nitrile Butadiene Rubber) packing with stainless steel caps that...

  • JST New HNBR Rubber Packer Element
    • December 27. 2023

    We are thrilled to introduce the new HNBR packer element which is made of HNBR 85 Shore A, and this rubber material is especially developed for packer element. The HNBR element passed customer’s test. The HNBR Rubber Packer Element is designed for downhole completions, where it serves as a critical component in isolating different zones within the wellbore. It is engineered using high-quality hydr...

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