Eclipse Spring Energized Seals

admin • September 12, 2012

Eclipse Engineering began manufacturing Spring Energized seals in 2005

Today, we supply Spring Energized seals with ID’s as small as .065” to in excess of 3 feet or larger. We offer Cantilever, Canted Coil, Helical and Garter Spring energized designs.

This technology has allowed us to always offer the most appropriate solution to your sealing needs, regardless of the conditions or environment the seal will be operating. Through our broad range of utilized jacket materials we can seal virtually any media environment.

At Eclipse, we feel speed of response is a clear advantage to our customers. Eclipse can turn many prototype applications around with finished product in 2 weeks and in emergency situations, we can even shave the time down to a few days. We’re able to offer this service because we carry a wide array of raw materials, including our spring stock in Stainless, Hastelloy, and Elgiloy.

When the need arises, please call our engineering department to discuss your application.

Compare canted coil, cantilever, and helical springs to find the right energizer for your PTFE seal.
By Doug Montgomery June 24, 2025
Aside from ball valve seats or non-contact labyrinth seals, PTFE is rarely used without a secondary energizer. This is due to PTFE’s inelastic nature. Unlike urethanes or elastomers which possess an inherent springiness, PTFE is often considered an “unalive” material. Much like a lump of clay, it will not bounce back once deformed. Especially in dynamic applications, this is not a desirable quality. Fortunately, with the addition of a spring or elastomer energizer, all of PTFE’s excellent attributes can be fully exploited in terms of sealing. Much like the rest of the seal industry, Eclipse utilizes three metallic spring energizer types for the seals we manufacture. Canted Coil, Cantilever V-Spring, and Helical. While each spring type ultimately accomplishes the same task, energizing a PTFE or polymer seal jacket, we’ll see that each type has unique properties better suited to certain applications.  Figure 1 below shows generalized load versus deflection curves for the three spring types. As you can see, each one is quite a bit different, favoring distinct circumstances and applications. Though, we’ll also find out load curves are not only deciding factor when choosing a spring.
By Doug Montgomery May 28, 2025
Explore the innovation behind Eclipse’s polymer superfinishing technique that enabled high-performance PTFE seals to meet extreme hydrogen leakage and durability requirements in cryogenic aerospace applications.
By Doug Montgomery April 17, 2025
Discover how Eclipse Engineering optimized seal design for high-pressure CO₂ extraction, addressing extrusion gaps and wear ring exposure challenges.
Learn how Eclipse solved manufacturing challenges for micro spring-energized seals
By Doug Montgomery March 21, 2025
Learn how Eclipse solved manufacturing challenges for micro spring-energized seals, optimizing sealing performance in epoxy dispensing equipment.