• 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...

• 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...

• April 08. 2022

Guangzhou JST Seals produces ID face seal and OD face seal for FLS valve from size 1 13/16 to 7-1/16 inch and for pressure from 2000Psi to 20,000Psi. JST provides ID face seals and OD face seals with two different materials for FLS and FLS-R valves. A common option is virgin peek spring powered by a stainless-steel spring. Another option is glass moly filled PTFE with stainless steel springs, whic...

• August 03. 2022

The high-performance metal spring energized seal is made of high-performance polymer, which can solve the sealing challenges of rotating motion, friction resistance limitation, plane change along the sealing surface and dynamic sealing. PTFE spring energized seals are designed for extreme low temperatures ranging from -270 ° C to extremely high temperatures, sometimes exceeding 300 ° C. The specif...

• September 15. 2022

Spring lip seals have been used for many years. Spring lip seals are used in a manner similar to conventional elastomer seals, such as o-rings. Elastomer seals often fail due to conditions that often occur in their operating environment, such as chemical corrosion, extreme high or low temperatures, extrusion, friction, or compression set. However, spring lip seals have different structures and do ...

• June 07. 2023

OD (Outer Diameter) face seals are used on the FLS and FLS-R seat. They are a type of mechanical face seal that's used in conjunction with the ID (Inner Diameter) face seal to provide a seal between the seat and the seat pocket of FLS style valves. FLS ID and OD face seals are used in all sizes of valves ranging from 1-13/16” to 7-1/16”. The OD seal you’ll receive is spring-loaded and pressure-ene...