• March 04. 2022

Pumpdown plugs separate cement from the displacement fluid during liner cementing operations. It released from the cementing manifold at the surface between the cement and the displacement fluid, wipes cement from the drillpipe and lands in the liner wiper plug. Applications Cementing operations during liner applications Wiping of the running string behind the cement with pumpdown plug Wiping of t...

• February 25. 2022

Liner Wiper Plugs separates drilling fluid from cement during displacement. It can reverse in the pipe without breaking the lips. Products can be produced in a variety of compounds and are available in sizes ranging from 3 ½” to 9 5/8”. Materials: NBR, HNBR, XNBR, FKM Benefits Improves cement integrity at the liner toe by separating displacement fluids in the running string and liner Reduces drill...

• February 18. 2022

Wiper seal, also known as the dust ring, is a type of hydraulic seal. Wipers are installed in the sealing configurations of hydraulic cylinders to prevent contaminants such as dirt, dust and moisture from entering the cylinder as they retract back into the system. This is usually accomplished by a seal having a wiper lip that substantially removes any dust, dirt or moisture from the cylinder rod e...

• February 16. 2022

For the installation and assembly of step seal, first install the O-ring, and then install the wear ring of step seal. First heat the wear ring, put it on the shaft, and then cool it. When installing the wear ring, first press the wear ring inward along the diameter direction, then install the wear ring into the groove, and then smooth the deformation. For installation in northern winter, the wear...

• 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...