Spring Energized Seals

Extended Heel Cantilever Spring Seal

In environments with high pressures, temperatures, and extrusion risks, Extended Heel Cantilever Spring Seals provide a robust solution. These advanced seals feature an elongated heel that isolates the spring mechanism from extreme conditions, enhancing seal integrity and doubling the pressure capacity compared to standard designs.

Extended Heel Cantilever Spring Seals are essential in applications like accumulators and pressure intensifiers, where failure of conventional seals could lead to operational inefficiencies or system breakdowns. Their extended design ensures that the seals can withstand harsh conditions without distortion, maintaining system performance and reliability.

The advantages of these seals are clear: they offer superior pressure tolerance, reduce wear and tear, and adapt easily to existing systems requiring upgraded sealing capabilities. By extending the heel, these seals protect critical components, prolonging the life of both the seal and the machinery it protects.

Materials like PTFE and UHMW-PE are commonly used in these seals for their exceptional resistance to chemicals and low friction properties. Whether for standard replacements or custom-engineered solutions, Extended Heel Cantilever Spring Seals are ideal for high-stress applications, ensuring durability and enhanced performance in demanding operational conditions.

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What you'll get out of these product modules

Our product modules offer an in-depth step-by-step guide to help make choosing and ordering the right product for your project easy.

With every product module you’ll receive the following:

Introduction to the product and a typical range of applications including temperature, pressure, velocity and media.
Detailed ordering examples and product illustrations.
Chart of standard seal materials including eclipse material code, description, color and applications.
Chart of standard part numbers including part number, rod Ø, groove Ø, groove width and o-ring dash size.
Hardware details including a cross section series, min rod ø for solid gland installation, r radius (max) and c lead-in chamfer (min).

Why Choose Eclipse?

We offer custom solutions to a wide variety of seal needs that span various industries, from aerospace to automotive to mountain bike design.

Quality Products

Eclipse was the first supplier to offer a full range of materials that meet the latest SAE spec AMS3678, which requires a high degree of testing and certification to meet the needs of our most discriminating customers.

Fast Turnaround

We understand your time is valuable. That’s why we work to get your product designed and delivered fast, eliminating downtime and saving you money.

Competitive Pricing

We stay ahead of the game with the best prices for the best quality of product in the industry.

Why Choose Eclipse?

Eclipse was founded under the premise that if we could solve enough of our customers’ problems they would continue to come back to us for solutions regardless of the type of products we offered.

Eclipse has evolved to produce standard product o-rings for a wide range of industries including Hydraulics, Pneumatics, Energy Production, Aerospace as well as Pharmaceutical and Food Handling. Instituting ISO9001/AS9100 quality system in 2015 allowed Eclipse to become a top tier supplier.

Today, Eclipse can support our smaller customers that require only a few seals a year to those needing in the 100’s of thousands. We continue to retain a quality product and are able to deliver consistently on time. Our customers continue to bring us challenging projects that allow our team to do what we do best, problem solving.

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