• June 29. 2021

Finite Element Analysis (FEA) is extremely important in critical seal design. JST conducted PR2 tests as per API6A, as well as FEA to its FS seal, S seal, valve stem packing seal, valve face seal. So why FEA is important and necessary? FEA capabilities make possible: 1. Seal failure prediction from cracks, leaks, or deformation, allowing a better-designed product or reverse-engineering of existing...

• July 09. 2021

I Test Purpose To verify the pressure cycling performance of the gate valve stem packing seals at 15000PSI, -50~350℉. II Product and fixture 1. Product structure The seals include 1 of A ring, 1 of spring, 1 of U ring, 1 of B ring, and 1 of C ring, see fig. 1: 2. Material : 1-PTFE+13% Carbon fiber+2%Graphite (PC007) 2-PTFE+13% Carbon fiber+2%Graphite (PC007) 3-Elgiloy Golden 4-PTFE+13% Carbon fibe...

• December 06. 2022

The seals made from carbon graphite materials have the common advantages of both metal and non-metallic materials. Its material characteristics includes excellent self lubrication, chemical stability, high thermal conductivity, high temperature resistance, corrosion resistance, high wear resistance, low expansion and easy maching. These characteristics of carbon graphite are necessary for pure wat...

• March 23. 2023

FEA Simulation Finite element analysis (FEA) is a computer-based technique used to calculate the performance of components in practical applications. This advanced technology can determine how components are affected by extreme temperatures and pressures, specific stresses, and aggressive chemical environments. Proficient use of FEA simulations enables accurate modeling by predicting behavior, eli...

• May 25. 2023

Sour gases containing hydrogen sulfide/sulfide (H2S) can have a very adverse effect on elastomers. The elasticity that is not resistant to corrosion becomes hard and brittle, losing elasticity and sealing ability, ultimately leading to sealing failure. JST has developed various sour gas resistant elastomer materials for the oil, natural gas, and petrochemical processing industries with the third-p...

• December 14. 2023

PE001 is a carbon-filled PTFE material (Black color), it has better high and low temperature resistance,excellent creep performance, can withstand high pressure for a long time, and is more resistant to extrusion, excellent properties in chemical resistance, wear resistance and wide-range operation temperature. It is usually used as composite seals with energizer, making i...

• May 23. 2024

The valve stem packing assembly refers to the sealing components used to prevent leaks from the stem of a valve. Valve stem packing plays a vital role in ensuring a long valve life. JST EST valve stem packing has good sealing performance under working pressure and a certain temperature range, and can automatically improve the sealing performance with the increase of pressure, which is suitable for...