• February 11. 2022

Hammer Union Seal (Lip Seal) is relatively large elastomeric annular seal that is rectangular in cross section, and used in hammer union-style pipe connections to establish flow lines and prevent leakage. The hammer union seal is “actuated” when it is compressed between the coupling components when they are cinched up. Hammer Unions are usually used in the Oil & Gas Industry, in steel mills, c...

• February 10. 2022

There are two sets of sealing rings (secondary sealing of oil casting head) at the bottom of conventional oil pipe head and casting head, which are used to seal the castings suspended at the top. At present, the commonly used seals are FS seal, S seal and P seal. The design of S and FS wellhead seals requires that they can withstand higher and higher pressure and temperature, and meet more stringe...

• January 25. 2022

JST Seals has proprietary wiper fin profiles which provide optimal wiping of drill pipe as well as accurate displacement. They are available in a variety of size and combination options which provide a more reliable cleaning and displacement of your workstring. The pumpdown plug (PDPC) & liner wiper plug (LWPC) separate cement from the displacement fluid during liner cementing operations. The ...

• January 21. 2022

Guangzhou JST Seals has been supplying stem packing seal and seat seal for 6A gate valve for over 20 years. To give an unequivocal assurance of quality, performance and durability, our seal has been tested and witnessed by the third party DNV. The seal materials are PEEK+PTFE+Elgiloy Spring. Our seals are installed on Douson 3-1/16“ 15M Gate valve and 2-1/16'' 10M Gate valve and 1-13/16'' 15M Gate...

• January 17. 2022

Metal End Cap Seals are one of the metal bonded elastomeric seals with the high level of extrusion resistance necessary for high pressure casing and tubing applications. JST has designed a PEEK End Cap Seals instead of Metal End Cap Seals to meet with customers special requirement. Why do we choose a non-metallic non-extrusion device as non-extrusion device for this seal? It’s because the lock dow...

• January 06. 2022

What is Wear Strip? Wear strip, is also called guide strip, or wear band, is designed to eliminate scoring in hydraulic and pneumatic applications by preventing metal to metal contact. It is used in reciprocating, rotary, and oscillating motion environment. Wear Strip is widely used in hydraulics, machine tools and mechanical engineering to prevent metal-to-metal contact. JST hot sale wear st...

• 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...