• 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...

• 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...

• 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 ...

• May 06. 2022

JST produces elastomer seal, material includes HNBR, NBR, FKM, AFLAS. There are lots of factors affecting an elastomer seal's performance, such as the chemical reactivity of the elastomer seal , working temperature, working pressure and working medium will influence the sealing performance. To make sure seal with no leakage and suitable for high temperature, lower temperature, high pressure, H2S/C...

• 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...

• 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 ...

• September 28. 2022

JST Seals has provided high-performance Polymer seal and Elastomer seal for the Oil & Gas industry for over 25 years. Available from standard sizes to customized sizes. These Oil and Gas seals are offered in a range of materials, FKM, PTFE, TFM, PEEK, HNBR, NBR, AFLAS. JST provides sealing solutions for the upstream, midstream and also downstream divisions of the worldwide Oil & Gas indust...

• 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 ...