• July 25. 2022

JST compound H3385 is a hydrogenated acrylonitrile-butadiene-rubber commonly referred to as HNBR or HSN, with excellent physical characteristics, outstanding abrasion resistance and chemical resistance to common hydraulic fluids, sour oils/gases(H2S) and crude oils. H3385 has been optimized to withstand the risk of rapid gas decompression(RGD) or explosive decompression(ED)or anti-explosive decomp...

• 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...

• July 15. 2022

1. Wellhead Casing Structure Wellhead casing usually consists of four-way, casing hanger, top wire assembly, flange parallel gate valve, connector, pressure display mechanism, etc; 2. Working principle of Rubber Seal The wellhead casing consists of the wellhead casing body, BT seal, casing hanger, dovetail seal , lockdown screw seal and sealing gasket. The casing hanger seat is hung on the steps o...

• July 15. 2022

When it comes to sealing in harsh operating conditions, the Upstream Oil & Gas industry has some of the toughest applications out there. With fluids such as hydrocarbons and gases such as H2S, combined with pressures climbing well above 20k psi and temperatures drifting to 200° C and higher, reliability in sealing is an absolute must to mitigate against unproductive downtime. Adding steam and ...

• July 15. 2022

In oil production, fracturing technology is one of the important measures to improve oil production and reserves. In order to achieve the purpose of increasing production, every oil well in the oilfield needs to be fractured, and some oil wells even need to be fractured many times. Generally, 4-5 fracturing trucks operate in the downhole oil layer to form a fracture, and the oil flows to the fract...

• July 07. 2022

Plunger pump packing is the sealing device of plunger pump, which is mainly a protective device to prevent the liquid at the hydraulic end from flowing out and improve the operation efficiency. JST Seals has developed high performance well service pump packings to provide maximum sealing for high-pressure oil well service pump. As the plunger pump is a high-pressure machine pump, and the temperatu...

• July 06. 2022

JST 3" External S seal use material HNBR85+316SS, we verify the S seal at working condition -29°C  to +121°C, 10000PSi, product design refer to API 6A -annex F. Below are the external S seal main test contents: • 1-Visual and dimension inspection for the seals and test fixture before the testing • 2-Witness the seals assembling progress • 3-Witness the sealing test for the O-ring from C port ...

• June 29. 2022

Nonmetallic seals that are exposed to retained fluids shall undergo the design validation procedure described in API 6A Annex F.1.13. To meet with the Thermochemical Performance of Seal Materials required by API 6A Annex F, a variety of JST compounds including HNBR, FKM, PTFE, PEEK compounds are successfully certified by third party Alpine Polytech. Sour Gas Immersion FF/HH: Gas Phase: 35% by volu...

• June 29. 2022

The requirements of hydraulic system for reliability are increasing day by day, and the working conditions of the continuously developing high-efficiency hydraulic system become more complicated. Therefore, when selecting the most suitable material, it is very important to be familiar with the working conditions, such as working temperature and pressure, load, speed and medium. The most commonly u...