Blog
- September 22, 2025
Protect Your Seal Aftermarket with Part Identification Technologies
Parker is revolutionizing part identification technology with a multitude of options. Customers are able to benefit from various identification methods such as non-permanent and permanent part markings by selecting their part number and company logo on the seal. For more advanced identification, a customer may opt to use the Parker Tracking System or utilize our RFID seals for tracking purposes. These identification methods ensure product authenticity and reduce seal installation errors by providing visual indicators for the assembly process.
Basic part marking – non-permanent identification
Non-permanent markings are applied to the surface of the seal and can be in the form of a company logo, unique part number, barcode, or other seal information. Non-permanent markings ensure Parker’s part origin, enables part level traceability and provides an easily visible cue to operators. This value-added feature helps reduce installation errors in addition to protecting customers against counterfeit seals.
- September 18, 2025
Understanding Extrusion Gap in High-Pressure Sealing Applications
One of the most common questions in sealing technology is: How much pressure can a particular seal handle? The answer depends on several factors, but the principal limiting factor in any seal system’s pressure capacity is the extrusion gap, often referred to as the “E-Gap.”
This
- September 16, 2025
Fluid Power Sealing Theory
There are a multitude of options when it comes to selecting the most suitable sealing product for your application. And for those who are not familiar with sealing technology, the vast multitude of options can be very intimidating. Gallagher can help.
We pride ourselves on being “The Seal Specialist”, and our engineering department is ready to help seal your toughest application. But where
- September 11, 2025
When it comes to sealing solutions, choosing the right O-ring is critical, and one of the most important factors to consider is shore hardness. But what exactly does this term mean for your project?
Shore hardness refers to the measurement of how hard or soft the material of an O-ring is. It directly impacts how well the O-ring can withstand pressure, resist deformation, and
- September 09, 2025
An Entire Solution in a Single Package
Freudenberg takes the customer out of the complex, tedious process of selection, adjustment and modification, providing integral sealing systems. The company has developed so-called ‘application cards’ that specific dedicated sealing systems for selected market segments and their applications. Here FST has gone beyond what is normal among its competitors. It doesn’t merely provide a fraction of all the components needed for hydraulic cylinders – it delivers all of them, from piston guides and seals, to primary and secondary rod seals, all the way to rod guides and wipers – and considers all their interactions in the process. As a result, a specialized knowledge of individual sealing elements is no longer needed.
- September 03, 2025
Spring Energized Seal Guide
Spring Energized Seals are designed for applications with high pressures and temperatures, cryogenic fluids, extreme media and other service conditions which exceed the performance characteristics of O-rings and conventional elastomeric seals.
- September 02, 2025
Extrusion-Resistant Nitrile O-Rings: Reliable Sealing for High-Pressure Boss Fittings
In aerospace and defense applications, sealing performance can make the difference between mission success and costly downtime. O-rings used in hydraulic systems must be able to resist extrusion under high pressures, perform reliably in low temperatures, and maintain compatibility with standard aerospace fluids.
That’s exactly what
- August 28, 2025
Gallagher's Seal Engineering
You may hear the term "seal engineering" when researching elastomer profiles, elastomer or plastic material types, and designs for gland housing. But what does it mean?
In this blog, we'll discuss the benefits of using Gallagher's dedicated seal engineers for your critical sealing
- August 25, 2025
PTFE use in Motorsports
Polytetrafluoroethylene (PTFE) has an interesting history and has been used in a number of ways over the years. There is, of course, the best-known PTFE brand Teflon® – the miracle cookware coating. But PTFE is also used in aerospace and computer wiring, and it’s even coated the fiberglass dome of the Hubert H. Humphrey Metrodome in Minneapolis. But the Metrodome isn’t the only sports-related application
- August 21, 2025
Video - Preventing Rotary Lip Seal Failure: 4 Common Modes Explained
Rotary lip seal failure isn’t just inconvenient, it can lead to unplanned downtime, fluid leakage, and expensive equipment repairs. At Gallagher Fluid Seals, we’ve seen firsthand how the right seal design, installation, and maintenance practices can make the difference between reliable performance and repeated failures.
In our newest video, we break down some of the most common rotary seal failure modes and share how
