• December 31. 2021

O ring is an annular rubber seal with a circular cross section, mainly used in mechanical parts in static conditions to prevent the leakage of liquid and gas. In some cases, O ring can also be used as the dynamic sealing element in axial reciprocating motion or low-speed rotational motion. O ring provides as an effective and economical sealing element in different types of static or dynamic seal a...

• December 23. 2021

Seal leakage of equipment in the oil, natural gas, and chemical industries would cause great loss of production, and it would cause severe environmental pollution, which has gradually increased users' requirements for safety sealing solutions. There are many factors that can cause seal leakage, the more common ones are as follows: 1.    Installation problems: a.  &nbs...

• December 15. 2021

JST Seals produces a full range of spring energized seals that are used in a wide range of applications. The Spring Energized Seals are normally comprised of a machined polymer jacket and a spring energizer. The polymer jacket can be made of different materials, from Virgin PTFE or PTFE with fillers, to PEEK and UHMWPE seals profiles. Spring configurations such as helical spring energized seals, s...

• 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...

• December 09. 2021

Recently, JST 13 inch External S seal has successfully passed the PR2 test at P-U (-20 deg F - 250 degrees F), 10000PSI nitrogen high pressure as per API 6A 21st Edition Annex F Section F.2.14: Design Verification for PR2F Group 5 Mandrel-type hangers, Table F.17 Sections: Pressure from below seals and pressure from above annulus seals. Test as specified in F.1.11 Test Procedure we follow as below...

• December 01. 2021

We recently got a quality complaint from customer that the hydraulic rod was burn during working, see below photo. After analysis with our engineering team, we call this “Diesel Effect”. We’d like to discuss about this. What is the “diesel effect”? The diesel effect occurs in a hydraulic cylinder when air is drawn past the rod seals, mixes with the hydraulic fluid and explodes when pressurized. Ho...

• November 30. 2021

V-packings, also known as Vee packing seal and Chevron V-packings, or V stack, is a kind of stacked seal. It is combined by a male adapter, a female adapter and a number of intermediate V rings. V-packings are designed to be used in applications such as hydraulic cylinders, fracturing pumps or well downhole. Facing different working condition (temperature, pressure, media), the raw material differ...

• November 26. 2021

The EFP 4-inch fracturing pump valve insert seals produced by JST uses modified TPU material, it is the consumables of fluid end valves and seats, which has excellent wear resistance and corrosion resistance. The frac pump valve insert seals are fluid end consumables, it plays important role in oilfield. It is mainly used in oil field fracturing truck, well washing truck, cement truck, plumger pum...

• November 12. 2021

JST manufactures a variety of P seals. The standard P Seal is a one-piece molded seal utilizing molded-in anti-extrusion device. This design enhances assembly by eliminating the loose anti-extrusion devices used in other designs. P seal can be used to seal rough casing and tubing. The standard material is HNBR85 to 90 durometer, and the material should be suitable for PU or LU temperature rat...