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As semiconductor manufacturing advances towards more sophisticated processes, the operating environments have become extremely demanding—high temperatures, aggressive plasmas, corrosive chemical gases, and stringent purity requirements all place near-cruel challenges on sealing materials. JST has launched the Kalfluo® series of perfluoroelastomer (FFKM) sealing solutions, dedicated to me...
In the high-pressure environments of the oil and gas industry, there is a seemingly small yet critically important component—the seal. When it comes to completion equipment and drilling equipment, a phenomenon known as Rapid Gas Decompression (RGD) can have catastrophic effects on sealing systems. Today, we will delve into this specialized but crucial topic. What is Rapid Gas Decompre...
The Step seal is a preloaded combination seal, integrating a PTFE glide ring for dynamic sealing and an elastomeric O-ring for static sealing and energization. For optimal system performance, it is recommended to be used in conjunction with a double-lipped wiper seal. Characteristics and Benefits: Compact Groove Design: Minimizes the required installation space. Minimized Friction: Provides extrem...
In oil wellhead applications, sealing system failures are not an option. Environments characterized by extreme pressures (often exceeding 15,000 psi), aggressive sour gas (H₂S/CO₂), rapid temperature fluctuations, and constant vibration relentlessly test the limits of standard sealing solutions. Elastomeric seals can extrude, degrade, or harden, leading to catastrophic leaks, environmental hazards...
Bonded Seal Test: Ensuring Reliable Sealing Performance. What is a Bonded Seal? Bonded seals are widely used in industries such as oil & gas . A bonded seal consists of a metallic with a vulcanized elastomer sealing. The combination of rigid support and flexible sealing ensures high pressure resistance and leak-tight performance. Key Tests for Bonded Seals To ensure performance, these seals un...
ID/OD Face Seals for gate valves are spring-loaded, pressure-energized lip seal that improve gate and seat service life. It is an end face mechanical seal with both rigid and flexible elements, which gives consistent contact at the sealing interface. ID face seals and OD face seal are combined used for valves. JST ID/OD face seal is spring loaded with a pressure energized lip seal. It is...
In high-pressure hydraulic and pneumatic systems, the primary seal faces a relentless enemy: extrusion. Under extreme pressure, the sealing material is forced into the microscopic gap between the piston and the cylinder wall (or the rod and the housing). This deformation, known as extrusion, leads to nibbling, tearing, and ultimately, seal failure. This is where the critical role of a back-up ring...
In liquefied natural gas (LNG) applications, valves can regularly encounter temperatures below -320 F (-196 C) and pressures above 750 pounds per square inch (psi). The equipment faces constant thermal cycling, conventional seals risk failure, leading to dangerous leaks and operational shutdowns. Lip seals excel in these extremes by maintaining elasticity and sealing integrity even under cryogenic...
The one-piece S-Seal eliminates installation problems that can occur when using multiple component seals. It can be stretched into place without splitting or compromising the non-extrusion elements of the seal. S-seal sealing materials need to withstand pressures as high as 20 000 psi and temperatures of 177º C (350º F). JST S-seal is made to perform in toughest situations, delivering reliable hig...
Leakage in hammer union connections is more than a nuisance; it's a serious safety hazard, an environmental risk, and a major source of non-productive time (NPT) on the rig. While the hammer union itself is a robust and trusted component, its performance is entirely dependent on a single, often overlooked part: the seal. Standard seals can extrude, crack, or degrade when exposed to high-pressure H...
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