Types of O-Ring Applications

So far on this blog we’ve discussed O-Ring sizes, the materials they’re made from, and the ways in which they can be used.

Types of O-Ring ApplicationsIn this post, we’ll talk about the common types of O-Ring applications, and their impact on O-ring sizing and hardware design.

  1. Static Axial Seals

When designing grooves for static axial seals, the first consideration is whether the pressure is coming from inward or outward.

In situations involving outward pressure, the outside diameter of the groove is primary, and the groove width is the primary consideration for the inside diameter. For inward pressure, the inside diameter is primary. This ensures that the O-Ring needs to move the least distance to seal the extrusion gap.

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Resilon™ Polyurethanes Maximize Performance and Extend Cylinder Life

Heavy Equipment Hydraulic Excavator 5255Reliable Solutions:

Parker’s combination of advanced seal design technology and material expertise has produced a reliable zero-leak rod seal package for hydraulic cylinders for greater equipment output which:

  • Extends useful cylinder life
  • Maximizes equipment uptime
  • Extends maintenance intervals

Integral to the design of the zero leak seal package are the characteristics of Parker’s Resilon™ polyurethane material – designed for extended temperature range, wear resistance, compression set resistance, and overall toughness.

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Your Guide to O-Ring Materials

o-ring materialsAs we’ve discussed in past entries on this blog, O-Rings can come in a variety of sizes and have a wide range of uses.

They can also be made from a number of different substances. Here’s a guide to the kinds of O-Ring materials we use, how they are used, and when to avoid using them.

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The Performance Advantages of a Quad-Ring™ Vs. An O-Ring

Quad-Ring vs O-Ring
The difference between a Quad Ring (left) and an O-ring

We’ve spent the past few entries on this blog discussing O-rings. Now we’d like to talk about the design and performance differences between elastomeric O-rings and Quad-Rings™.

The O-ring is a doughnut-shaped circular cross section seal that can be used nearly anywhere in the sealing industry. The Quad-Ring™, a 100% retrofit option for any O-ring application, can and will outperform an O-ring in many technical areas.

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A Guide to O-Ring Sizes

o-ring sizesO-Rings are solid-rubber, doughnut-shaped seals used to block the passage of a gas or liquid when pressed between two mating surfaces.

They are amongst the most widely utilized seal designs in the world. Due to the number of ways they can be utilized, there are essentially an endless number of O-Ring sizes.

But despite the wide range of O-Ring sizes, every O-Ring has the same two dimensions: the inner diameter (ID), and the cross-section (CS). To attain an adequate seal, it must achieve proper compression, approximately 18-20% in the cross sectional characteristic.  This creates a boundary to keep fluids in and contaminants out.

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Your Elastomeric Diaphragm Checklist

elastomeric diaphragmsPumps that operate with a diaphragm have been in use since the mid-1800s because of their simplicity and effectiveness.

That isn’t to say these pumps have remained unchanged in all that time. More than 150 years of innovation and technical improvements in diaphragm profiles and elastomeric material sciences have secured their use for a wide range of pumping and reciprocating applications.

The design and utilization of diaphragms in pumping applications is a vast topic, yet it is one that Gallagher Fluid Seals’ application engineers have mastered by approaching the manufacturing and design of diaphragms with a step-by-step process.

The result is diaphragms that are expertly designed and made from the most appropriate material and crafted in a way that optimizes cost and manufacturability. Freudenberg-NOK Sealing Technologies are our vital partners in this process, and are worldwide leaders in the diaphragm field.

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What is an O-Ring? The Fundamentals

what is an o-ringTechnology is always moving forward, but some things stand the test of time.

One of those things is the O-Ring, which was first patented in 1896. What is an O-Ring? It’s a doughnut-shaped loop designed to prevent the passage of liquids or gases. It’s one of the simplest precision mechanical pieces ever produced, and continue to be one of the most widely-utilized sealing products.

O-Rings can be made from plastic or metal, but for the purposes of our blog, we’ll focus solely on rubber – or elastomeric — O-Ring design.

An O-Ring, also known as a “torus,” works in tandem with the glands in which they are installed. The gland is normally cut from the metallic hardware, and works with the O-Ring to seal. The gland and the O-Ring must be designed together to insure top performance.

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The Evolution of Rotary Lip Seals

lip sealsIn the world of sealing, it seems as though there are as many varieties of pump applications as there are sealing solutions.

Many breakthroughs in technology have aided the evolution from braided packing to advanced mechanical seals, leading to remarkable gains in pump performance, efficiency and safety. Although mechanical seals are certainly a fitting solution for an array of pump and rotary applications, advances in polytetrafluoroethylene (PTFE) rotary lip seals can also solve these challenging radial sealing solutions.

Radial lip seals can retain lubricants and excluded unwanted contaminants for a fraction of the cost of a mechanical seal, while providing many of the same benefits in terms of performance and seal life.

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Gallagher Fluid Seals Acquires Johnson Packings

toplogoGallagher Fluid Seals has announced its acquisition of Johnson Packings and Industrial Products, one of New England’s largest distribution and manufacturing companies.

“We are incredibly pleased to welcome Johnson Packings and their 28 employees into the Gallagher organization,” Gallagher President and CEO Joe Gallagher said. “We look forward to working with the strong customer base, vendors and employees of a company that has been as successful and in business as long as Johnson Packings. We feel that all of these factors, in addition to the new gasket fabrication capabilities, greatly enhances the position of Gallagher Fluid Seals in the marketplace.”

Based in East Longmeadow, MA, Johnson has been supplying gaskets, seals, packings and accessories for nearly eight decades, building a sterling reputation for providing quality products and reliable customer service.
By acquiring Johnson, Gallagher will have a broader range in finding solutions for engineers. It improves Gallagher’s already strong place in New England market, and represents the latest step in the company’s continued growth.

Begun outside Philadelphia by Walter Gallagher, Sr., Gallagher Seals is celebrating its 58th year in business. We specialize in the application, design and distribution of fluid seals, and offer a full range of elastomers and high performance sealing devices for the semiconductor, chemical processing, fluid power, aerospace, and energy, oil & gas industries, as well as general industrial, heavy equipment, medical and instrumentation companies.