Eclipse Engineering
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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
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September 25, 2024
Custom Piston Seal Rings for Composite Bores
Elastomerics or rubber O-Rings find their way into many applications, whether it be highly technical aerospace equipment or budget-friendly consumer products. This is typically for a good reason: because O-Rings provide a great sealing interface in most situations, are easy to install, are readily available, and can be purchased for a minimal cost (depending on material type).
In this article, our friends at Eclipse Engineering how a customer
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September 03, 2024
Types of Spring Energized Seal Lips
Spring Energized Seals can be found in all kinds of applications across the spectrum of industries and sectors. While the pros and cons of the different spring types contained in the seal are often discussed, the style of sealing lips can also have a significant impact on performance.
Every spring type has at least 4 standard lip style options, so choosing the right style for your application is critical. There are a number of design factors that need
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July 23, 2024
PTFE Spring Energized Seal Provides Low Friction Performance in Food Product Dispenser
The Food and Beverage industry presents some unique challenges in the sealing world. FDA compliance and Clean-In-Place requirements can complicate seal design and potentially limit material selection. With these additional considerations, Food Industry seals often still must operate under the same strenuous conditions and performance specifics as many industrial or aerospace applications.
Things like
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June 14, 2024
Cryogenic Seals
When designing for low temperature sealing, the first step is to define the temperature range that the seal will be operating in.
Typically, cryogenic as seals are those that are operating below -65 Fahrenheit. Gallagher's partner, Eclipse, chooses this benchmark because they currently have elastomers that have a usable TR10 value at this temperature.
When designing at this level — with high temperatures around 300 Fahrenheit — an understanding of what level of
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May 21, 2024
Customized Seal Load/Friction in a Torque Sensitive Rotary Union
Rotary Unions are mechanical devices meant to allow the transfer of liquid or gas media from a stationary input to an output that is rotating. Rotary Unions are found in industries across the board, from compact units in hi-tech robotics to large industrial hydraulic units for construction equipment.
A classic example of where a rotary union is found would be in large hydraulic excavators or backhoes. The union permits
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February 16, 2024
Clean-in-place seals, or CIP seals, were developed to allow a seal to remain in place. This is especially important when the seal gland is partially open, allowing the seal to be flushed of debris.
In a food application, the same chemicals used to clean or flush the system would be used to clean the seal gland. Similarly, when other products such as pharmaceutical or adverse chemicals needed to be flushed, the CIP seal does an excellent job being open
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December 21, 2023
Understanding Rod Wear Rings
Rod wear rings play a pivotal role in hydraulic and pneumatic systems. By supporting the rod in the cylinder, they prevent metal-to-metal contact, which is crucial in minimizing friction and wear.
The Importance of Piston Wear Rings
Piston wear rings, on the other hand, are designed to stabilize the piston as it moves within the cylinder. Their primary function is to prevent the piston from making direct contact with the cylinder
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December 12, 2023
Picture this: You have an application using a standard O-Ring. The O-Ring seals great, but is wearing out very quickly, and friction is far exceeding the goals of the system.
You retrofit a fancy PTFE spring energized seal that costs 1000 times more than the O-Ring…only to find out it leaks!
Did you get a defective seal? Is the seal designer incompetent? Is the raw material bad?
Actually, everything about the design and manufacturing of the spring
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November 09, 2023
Back-Up Rings
Back-up rings serve an important role in world of seals. While the design principle and construction are incredibly simple, they greatly extend the usefulness of the most common and prolific sealing device in the world: the O-ring.
Back-up rings are aptly named as they do just that: they back-up an O-ring.
Back-up rings are commonly nothing more than a ring of polymer meant to space the O-ring away from the extrusion gap in hardware. By blocking off the extrusion
