• March 16. 2023

A spring energized seal is a type of dynamic seal that uses a spring to provide a constant force against the sealing surface. The spring is typically made of stainless steel, alloys sometimes even PTFE and PEEK, and it is compressed between two components, such as a gland and shaft. As the components move relative to each other, the spring compresses and deforms, creating a dynamic seal that preve...

• April 25. 2023

Spring Energized Seal consists of two components, a polymer-based seal jacket and the spring. Jackets are typically made from different PTFE material blends, which have low friction, high and low-temperature range, and broad chemical and media compatibility. The seal jacket is typically machined in the shape of a “U”. Installed with the open side of the “U” facing the system pressure.This is for t...

• 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...

• July 08. 2023

The medical device industry is facing evolving challenges in finding suitable sealing solutions for new and improved designs. We will focus on customizing spring energized PTFE seals as a potential solution to the sealing challenges in the medical industry. PTFE is a popular choice for spring energized seals used in medical applications for several reasons. One is that some grades of PTFE have bee...

• July 21. 2023

The temperatures involved with LNG happens to be at the point where many elastomers and polymer materials lose elasticity and begin to behave as brittle materials. Some seals may also experience dimensional fluctuations related to temperature changes, further increasing the likelihood of failure. If temperature fluctuations are periodic, problems related to cyclic stress will arise. Another issue ...

• August 04. 2023

Spring Energized Seals are made up of two components: a polymer-based seal jacket and spring energizer. Spring energized seals are great for use in environments that are too aggressive for other types of seals, as they provide a longer service life, maintain sealing pressure, and offer extreme wear resistance. Spring Energized Seals are popular in the medical device industry for a variety of reaso...

• October 17. 2023

PTFE seal designs were developed to incorporate energizing elements such as O-Rings and metallic springs. These energizers ensure the PTFE seal is always in contact with the sealing surface. JST utilizes three different types springs to internally energize PTFE and other polymer seals, each with its own advantages. Below, we will discuss in details for some of the advantages of cantilever V-spring...

• November 30. 2023

Spring energized seal is a spring-actuated, pressure-assisted sealing device consisting of a PTFE (or other polymer) jacket partially encapsulates a corrosion-resistant metal spring energizer. When the JST seal is installed in the gland, the spring is under compression, forcing the jacket lips against the gland walls and there by creating a leak-tight seal. The spring provides permanent resilience...