• March 29. 2024

MEC seal is short for Metal End Cap Seal, and it is the seal bonded the metal end cups on elastomer, which can provide a high level of extrusion resistance and metal to metal sealing. MEC seal is designed for EOG applications in harsh conditions, particularly for high pressures and high temperatures. Usually the elastomer can be HNBR, FKM, Aflas which depends on the application, and the material o...

• March 29. 2024

For applications with special sealing and reliability requirements, JST has developed a chevron packing set that combines its proven spring energized seal design technology with PTFE-based materials, and other high-performance polymer plastics. A typical PTFE chevron stack consists of a radial spring energized seal, several V-rings and an anti-extrusion ring. The spring energized seal is the main ...

• March 29. 2024

Metal seals are versatile components that find applications in a wide range of industries and operating conditions. Here, we will discuss the different types of metal seals and their respective applications in various operating conditions. O-ring Seals: Material: Typically made from metals such as stainless steel or nickel alloys. Applications: Hydraulic systems: O-ring seals effectively prevent f...

• March 21. 2024

The glyd ring is a radial sealing element composed of a polymer ring and an elastic O-ring energizer. This type of seal is typically chosen for general industrial pneumatic/hydraulic applications that require dynamic sealing elements. During installation, the elastic elastomer is compressed and the polymer ring is pushed onto the dynamic groove mating surface, forming a tight seal even under low p...

• March 14. 2024

JST manufactures well service plunger pump packings in a wide variety of materials to suit specific well conditions and operating parameters, they are available in a wide range of elastomeric materials and high performance resins, including NBR, HNBR, FKM, filled PTFE, fabric reinforced rubber.  to suit specific well conditions, operating parameters, and fracturing fluids. NBR Elastomers...

• March 14. 2024

Modified PTFE or TFM, is a high-density copolymerized material. It has low gas permeation and reduces cold flow. Often used in the medical field as an artificial blood vessel graft and in other applications where biocompatibility is required. TFM is also FDA and USP class VI suitable. TFM remains a largely unfamiliar material in the general PTFE machine parts and seal markets. At JST, we have...

• March 13. 2024

A needle valve seal is a component in needle valves, which are precision valves used to control the flow rate of liquids or gases in a system. The needle valve seal is responsible for preventing leakage through the valve and ensuring a tight seal. There are different types of seals used in needle valves, depending on the specific requirements of the application. Some common types of seals used in ...

• March 08. 2024

JST S seal is elastic sealing element composed of a high modulus elastomer and two integrated anti-extrusion springs which allows the seal to withstand large compression gaps. The S seal can be customized designed based on temperature, medium, and environment. Sealing materials utilized for wellheads which need to withstand pressures as high as 15 000 psi, and temperature from –29°C to +177°C (–20...

• February 26. 2024

JST designs and manufactures spring energized lip seals for ball valve. In this article, we will introduce some lip seals used for different sealing application in ball valve. Lip seal type FVR is used for ball valve seat sealing. As shown in picture Fig-1, the FVR lip seal contains four parts. 1- T ring (material: carbon filled PTFE), 2- U ring (material: carbon filled PTFE), 3-Spring (material: ...