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PDR rotary shaft seal extends the boundaries of elastomeric radial shaft seals, utilizing advanced materials and design techniques to provide optimal sealing performance for each application. The result is a superior sealing solution that retains a compact sealed casing. Due to the inherent limitations of various elastomer grades, the application range of standard elastomer rotary shaft seals is l...
Every machine or system that relies on seals understands the seriousness of a leak or premature seal failure. The subject involves significant financial, operational, and sometimes environmental issues that require in-depth understanding. The Basics of Seal Leakage What is Seal Leakage?: Beyond the basic definition, seal leakage can be understood as any unintended escape of fluid or gas due to the...
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...
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 ...
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...
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...
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...
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...
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 ...
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