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In the oil and gas industry, the risk and consequence of unplanned downtime is greatest in extreme environments. JST has long been committed to the provision of sealing solutions for the exploration and production of oil and gas. Wellhead is a critical part of oil and gas infrastructure. Its sealing materials need to withstand pressures as high as 15 000 psi and temperatures of 149º C. From d...
P Seal is a static seal comprising a profiled elastomeric sealing element with two anti-extrusion metal rings or stainless steel wire mesh rings. It is used in casing and tubing heads to seal rough casing and production tubing. In operation, the inside diameter (primary sealing face) of P Seal acts on the outside diameter of the casing/tubing running through it. The groove/recess in the ...
API gate valves refer to the valves which are made under the regulations set by the American Petroleum Institute. They are usually widely used in petroleum and industrial processing plants, playing an important role at shutting off the flow. And it is true that the featured and core part of them is called the wedge. In order to meet the various specifications, API gate valves are indeed designed a...
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...
Cryogenic Sealing Solutions provides a powerful sealing mechanism for cryogenic materials such as cryogenic fluids. Sealing at cryogenic temperatures has its own unique set of challenges. JST Seals recently designed and shipped a very urgent LNG cryogenic valve seals for the overseas customer. Its completed working conditions are as follows: Fluid media LNG at temperature: minus 175°C Maximum temp...
Wellhead is a critical part of the oil and gas infrastructure. Seals material and design must withstand pressures as high as 15K psi and temperatures LU (-46℃~121℃), PU (-21℃~121℃), or SX (-18℃~178℃). From material development, seals design, testing, through to production, JST make FS seal and S seal to perform in the toughest situations, delivering reliable high pressure sealing. They combine the...
Hammer Union Seals are used in hammer union-style pipe connections to establish flow lines and prevent leakage. Hammer Unions are made by Weco, FMC, and Kemper Valve among others, and are used in the oil & gas industry, in steel mills, chemical plants, strip mining, and marine dredging. The hammer union seal is exposed to the gases and fluids that flow through the coupling making the choi...
JST successfully got the authorization of invention patent on a wellhead secondary pack off seal structure in USA by United States Patent and Trademark Office in July, 2021. During the drilling operation and oil and gas testing, the casing head slip hanger is the basic part of wellhead equipment, which is installed at the upper end of casing string to hang casing strings of each layer and seal the...
Low temperature cryogenic seals are widely used in LNG Compressors, Cryogenic Valve, LNG Fueling Systems. Sealing cryogenics is a balancing act of many factors such as spring force, surface finish, friction and allowable leakage. The ball valve is simple in structure, small in installation space, and sealed by medium force, not affected by external driving force, so it is widely used in various wo...
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