Eclipse Engineering
- May 07, 2026
Controlling friction using the properties of Teflon® and adjusting the durometer of an energizing elastomer allows us to adjust the load and control the force the seal applies.
Seals are often used as a barrier or exclusion device. When considering a device that becomes sterilized, seals often protect the internal components of that device.
Some systems require adjustment of the mechanism. Friction becomes a factor when making internal adjustments. An O-ring is always the easiest solution
- April 20, 2026
The Industrial seal market is by far the broadest and most encompassing
- February 23, 2026
The Backup ring likely found its roots in the use of leather packings,
- December 15, 2025
Why an Extrusion Gap is Important
“How much pressure can this seal handle?”
The answer to this question depends on a number of parameters and conditions. But the principle limiting factor in the pressure handling of any seal system is the extrusion gap.
Commonly referred to as the “E-Gap,” the extrusion gap is one of the most critical design aspects in any high-pressure application. Seal design, type, and material are all influenced by the extrusion gap and the desired pressure handling capability.
What exactly is an extrusion gap, and why is it so important in the successful design of a sealing system? Let’s find out.
The Basics: What is an Extrusion Gap?
In terms of sealing systems, the extrusion gap is defined as the clearance between the hardware components.
In a piston configuration, this would be the clearance between the piston and bore. In a rod configuration, this is the clearance between the rod and housing it’s passing through.
The extrusion gap can be expressed in terms of radial or diametral clearance, which can lead to some confusion. Our partners at Eclipse define the E-Gap by stating it as the radial clearance. The radial clearance is equal to the diametral clearance divided by two.
It’s important to note that while hardware components might be machined to have a specified clearance, this gap might not be perfectly realized or maintained.
- May 28, 2025
Here we’ll discuss the basic functionality and design principles of spring energized seals and discover why one might be the perfect sealing solution in your application. This article was written by GFS supplier/partner Eclipse Engineering.
Spring energized PTFE seals perform reliably in a variety of applications where conventional elastomeric seals fail due to chemical attack, extreme heat or cold, friction, extrusion or compression set.
- February 12, 2025
Below, we’ll explore how Teflon is processed for sealing purposes, and why we sometimes see variation in surface quality and/or cracks in finished Teflon seals.
- December 20, 2024
PEEK Spring Energized Seal in a High Temperature and High Radiation Application
One distinct environment presents a particularly challenging set of circumstances for seal design – high radiation. Gallagher Fluid Seals partners with Eclipse Engineering on many unique customer projects. Eclipse’s primary seal material choice for many applications is PTFE and PTFE blends. With all the wonderful attributes PTFE possesses as a seal material, radiation resistance is not one. In high radiation environments
- November 22, 2024
Rotary Sealing in Cutting-Edge Robotics
Technological advancements in the area of robotics have led to more and more life-like creations existing only in works of science fiction a few decades ago. Development in autonomous logic processing and sensing allow bipedal robots to walk over uneven ground, up and down stairs, open doors and carry loads. Fast response to dynamic and unpredictable real-world environments is critical for the future use of robots in true-life service and practical employment
- November 05, 2024
Custom PTFE Tri-Clamp Gaskets Maximize Equipment Uptime
It’s no secret the craft beer industry has exploded in the past decade across the country. The number of microbreweries in the United States has more than tripled since 2012. Sales of craft beer topped $28 Billion in 2023 nationwide, making it big business for many state’s economies.
Healthy demand for new and exciting beer types has found many small, niche breweries scrambling to produce enough beer to satisfy the market. Breweries
- October 24, 2024
Customized Cryogenic Face Seals for Liquid Oxygen Rocket Turbopumps
With demand for services provided by low orbit satellites ever expanding, there is no shortage of new launch vehicle requests. The communications, navigation, and weather services most people have become accustom to are all made possible by the thousands of satellites orbiting the Earth each and every minute.
While
