• August 06. 2021

Low temperature cryogenic seals are widely used in LNG Compressors, Cryogenic Valve, LNG Fueling Systems. Sealing cryogenics is a balancing act of many factors such as spring force, surface finish, friction and allowable leakage. The ball valve is simple in structure, small in installation space, and sealed by medium force, not affected by external driving force, so it is widely used in various wo...

• July 29. 2021

Piston seals for hydraulic cylinders are quite similar to rod seals, but they are attached to a piston that seals a bore or cylinder housing. These seals are specifically designed to prevent pressurized fluid from leaking down in between the piston and the bore, while the piston itself is pushed down the cylinder bore. The high-quality hydraulic piston seals from JST will keep the pistons in your ...

• July 28. 2021

Wear Ring seal also called Guide Rings, Wear Bands, are typically used in cylinders and machinery with requirements for dynamic performance and service life. Wear ring materials are well known for their low friction, heat resistance, wide temperature range performance, high chemical resistance and excellent wear characteristics. Popular wear ring materials include glass filled Nylon, bronze filled...

• July 20. 2021

Many formations are too tight to produce oil and natural gas, and require a stimulation process to extract the resources. In hydraulic fracturing, fluids carrying proppant are pumped into the ground with enough pressure to crack the rock. The proppant is left behind to hold open the cracks, while the fluid is flowed back allowing oil and gas the ability to flow to surface. Fracturing pump seal pla...

• July 19. 2021

PTFE (Polytetrafluoroethylene) material is widely used in hydraulic and pneumatic seals. PTFE gets high melting point in excess of 300℃, has good resistance to ageing, as well as low coefficient of friction. PTFE seals are used to enhance friction capabilities, withstand high pressure applications, and extend seal life in applications outside the parameters of elastomeric seal use. We offer a rang...

• July 16. 2021

JST's Spring Energized Seals, also called Lip Seals, are normally comprised of a machined polymer jacket and a spring energizer. They are available for rod, piston, and rotary applications, and can be manufactured in a variety of polymer materials depending on each application requirement. Our seals can be made of different PTFE materials, from Virgin PTFE or PTFE with fillers of di...

• 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...

• July 08. 2021

Hydraulic seals, also called hydraulic cylinder seals or shaft seals, are parts used to keep fluids from escaping from cylinders, at the same time preventing contaminants from entering into cylinders. They are critical parts in many types of machinery since they help create a method for fluid power to be converted into linear motion. These seals need to be designed and produced to withstand high p...

• 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...