Media

Due to PTFE's excellent friction resistance, high and low temperature resistance, and chemical resistance, Teflon (PTFE) has been widely used in different types of seals, such as PTFE oil Seals, spring loaded seals (spring energized seals) and rotary seals. However, applications that operate in extremely low temperature environments, such as cryogenic gas and liquid systems, scientific laboratories, and transportation, often face the challenge of ensuring the operation of the equipment runs smoothly under extreme low temperatures. That’s why Teflon spring seals (PTFE Spring energized seals) are the solution for solving these challenges.

Challenges caused by extremely low temperature

Extremely cold environments can have serious effects on equipment and mechanical systems. Under these extreme conditions, many materials can become brittle and traditional elastomers seals can easily fail. Moreover, low temperatures can cause sealing performance to degrade, which can negatively impact the operation of the equipment.

Advantages of Teflon spring seals and PTFE seals

When selecting seal materials, Teflon (PTFE) material shows excellent advantages. High-performance seal manufacturers typically use different fillers such as graphite, glass fiber, carbon fiber, and UHMW-PE to create low-temperature seal solutions that can meet temperatures from minus 260°C (-260°C) to room temperature. These solutions offer the following benefits:

Low temperature resistance: Teflon material can maintain its elasticity and sealing properties at extremely low temperatures. Unlike traditional elastomers, it does not become brittle easily, so it can cope with extreme cold environments.

Low coefficient of friction: Teflons have an extremely low coefficient of friction, which means they provide smooth operation even at low temperatures, reducing the loss of energy.

Chemical Resistance: PTFE has excellent resistance to a wide range of abrasive chemicals, which is important in extreme environments where corrosive media may be involved.

Long Life: The durability of Teflon spring seals proves that they can be used long-term in cryogenic environments, reducing maintenance costs and equipment downtime.

Applications

Spring Energized Seals are widely used in various low temperature applications. Here are some application examples:

•     • Cryogenic valves: Cryogenic valves need to ensure sealing performance under extreme low temperatures to avoid leakage of cryogenic gas or liquid. PTFE spring energized seals can meet with the requirement.
•     • Cryogenic Pumps: Cryogenic pumps are used to handle cryogenic liquids that require sealing element to prevent leakage to ensure operational efficiency. PTFE related sealing components can provide excellent safety in such applications.
•     • LNG filling guns: Liquefied natural gas (LNG) transfer stations use LNG filling guns, which require efficient sealing tools to handle extremely low-temperature. PTFE spring energized seals can provide top sealing quality and efficiency for this application.
•     • Piping system: Cryogenic piping systems require reliable sealing to ensure that liquid or gas does not escape. Teflon spring energized seals will provide excellent sealing for piping systems.

Conclusion

In cryogenic environments, effective sealing solutions for handling extreme conditions are required. Teflon spring seals provide a reliable solution through their low temperature resistance, low coefficient of friction and superior chemical resistance characteristics. The PTFE spring energized seals have been widely used in a variety of low temperature applications. If you have cryogenic sealing needs, you may consider Teflon spring seals, which are ideal in solving your challenges. Contact us directly for more information or help on sealing solutions!