Designing a Sealing Solution

sealing solution At Gallagher Fluid Seals, engineering is central to every project and solution we deliver.  Our goal is to provide sealing solutions where there had been sealing failures, and our engineering team is among the most experienced and talented in the industry.

As an independent distributor, we have the freedom to be objective and create the optimal sealing configuration for your application.  Our engineers work with the design teams of both our customers and suppliers, to ensure all sides of the application are thoroughly considered and there are no surprises at the end of the project.

This blog post is the first in a four-part series discussing how we work with our customers to create a sealing solution for their most critical applications.  The first step in this process is application discovery and review.

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Webinar: A New Generation of Freudenberg Polyurethane

Freudenberg Polyurethane“This is an exciting time for us, because we do have a new generation of polyurethane.”

That’s Greg Daniels of Freudenberg Sealing Technologies, speaking in the recent webinar we ran with our friends at the German company.

He’s talking about the benefits of 94 AU 30000, a durable, effective new sealing solution. Here are the basics of some of the characteristics of this new Freudenberg polyurethane:

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VIDEO: Flexibility in Your Rigid Piping Systems With Abra-Line

Abra-LineGarlock ABRA-LINE ™ rubber expansion joints offer superior performance, reliability and service life in your plant.  Expansion joints are specially engineered products inserted in a rigid piping system to achieve one or more of the following:

  • Absorb movement
  • Improve thermal stability
  • Relieve system strain due to thermal change, load stress, pumping surges, wear or settling
  • Reduce mechanical noise
  • Compensate for misalignment
  • Eliminate electrolysis between dissimilar metals

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PTFE Radial Lip Seal Applications

dieselToday we’ll conclude our series of blog posts on PTFE by discussing some PTFE radial lip seal applications, as well as a brief look at wear sleeves.

PTFE has superior mechanical and physical properties and chemical resistance, which means the areas where PTFE radial lip seals are used is growing. These areas include:

Diesel Engine Applications

These consist of the front and rear crankshaft, accessory drive, and blower and thermostat seals. PTFE seals are used and tested in these areas because they can meet the performance and life requirements of modern engines.

Minimum wear, performance at high temperatures with limited lubrication, resistance to abrasive contaminants and fluid compatibility are the main factors for PTFE’s use in these applications.

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Gallagher Seals Lunch & Learn

Gallagher Seals lunch & learnIn the past few years, Gallagher Fluid Seals has greatly expanded the ‘Lunch and Learn’ events that we hold for our customers and prospects.

These events are typically aimed at organizations that have engineering departments or maintenance staffs whose jobs require them to interact with seals on a consistent basis.

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PTFE Rotary Seals: Housing, Pressure and Shaft Run-Out

rotary7Today we’ll continue our look at PTFE rotary seals by focusing on three areas: housing/bore considerations, pressure and shaft velocity and shaft misalignment and runout.

Housing/Bore Considerations

Typical PTFE rotary lip seals are pressed into the bore to assure proper OD sealing and seal retention in the housing. Most seal and housings are made from steel and cast iron. Take care when softer materials – aluminum, bronze, plastic – are used for the housing. Aluminum has a thermal expansion rate almost double that of steel. Metal case designs can lose the required press fit in an aluminum housing when they go through thermal cycles due to the higher rate of thermal expansion of aluminum.

A finish range of 32 to 63 μin Ra (0.8 to 1.6 μin Ra) is recommended for service pressures up to 3 psi (0.20 bar). For thicker fluids such as grease, a 125 μin Ra (3.17 μin Ra) finish would be acceptable with no system pressure.

A lead in chamfer is strongly recommended for all seal housings. The chamfer aligns the seal during installation and helps keep the seal from cocking. Both corners of the chamfer should be free of burrs or sharp edges. For pressurized rotary applications, take additional precautions to ensure the seal isn’t pushed from the housing.

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VIDEO: Thermoseal Presents – How to Properly Install Gaskets

install gasketsIn today’s post, we’ll look at the proper way to install gaskets.

In the past, we’ve used this blog to discuss the hidden cost of gasket failure. While gaskets represent a fraction of the cost of the machines or systems in which they are installed, the consequences of a failure can range from nuisance leaks to catastrophic failure.

And with that failure comes damage to equipment, lost production time, non-compliance penalties, along with loss of customer confidence and even the threat of litigation.

In that article we said that 68% of gasket failures were due to insufficient load, stemming from improper installation, misapplication, poor flange design and/or bolt selection, and rotated flanges. Today, we’ll look at the first section of that list.

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Freudenberg Diaphragms: A Versatile Design Element

Freudenberg diaphragms Diaphragms may be used in an array of applications, including pumps, actuators, hydro-accumulators, valves, and regulators.

Freudenberg has the expert engineering and materials expertise to provide the high performance diaphragms your equipment demands, in standard or custom-designed sizes and formats for any application. Its teams have been directly involved in the development and growth of the diaphragm industry, and they bring that expertise to every customer collaboration.

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Thordon Bearings for Every Industry

Thordon1Thordon Bearings designs and manufactures a complete range of high performance, non-metallic journal bearing solutions for marine, pump, hydro-turbine, offshore oil and other industrial markets.

From water lubricated stern tube and rudder bearings for ships to grease free wicket gate bearings for clean power generation, Thordon provides innovative non-polluting bearing solutions that meet or exceed the technical requirements of your application.

Since the first Thordon bearing was developed in 1966, Thordon has continuously improved its high performance polymer technologies and bearing designs to become the world leader in elastomeric bearing technology. Our applications engineering and global technical support teams can support your most unique bearing technical challenges.

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PTFE Rotary Seal Shaft Considerations

shaft table 3As we continue this blog’s PTFE series, we’re going to take a closer look at PTFE rotary seal shaft considerations.

In rotating applications, proper surface finish is crucial for getting positive sealing and the longest seal life possible. Rotating surfaces that are too rough could create leak paths and can also be very abrasive. Unlike elastomer contact seals, PTFE lips can run on very smooth surfaces regardless of lubrication.

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