Category Archives: Freudenberg Sealing

NEW! Process Seals Webinar – Flavor Transfer

Process Seals - Flavor TransferGallagher Fluid Seals recently made our Process Seals Webinar available on the website.

Food & Beverage, Pharmaceutical, and Chemical Processing industries have different requirements than typical seals. Process seals need to have multiple media resistance. Unlike a traditional seal that only needs to be concerned with the media running through it, process seals also have to be designed to withstand the cleaning media being used.

This is the third and final section of the Process Seals Webinar, presented by Gallagher Fluid Seals & Dichtomatik Americas. This video discusses flavor transfer for seals used in processing.

To download the webinar in its entirety, simply visit our Resources page, or click on the image at the beginning of the article.


This webinar was produced in conjunction with Dichtomatik Americas,  a Freudenberg brand.  With a broad array of products and materials, but more importantly comprehensive knowledge and technical expertise, Dichtomatik has earned its title as market leader for sealing solutions in food & beverage, pharmaceutical, and chemical processing industries.

[VIDEO] Process Seals Webinar – Hygienic Design

Process Seals - Hygienic DesignGallagher Fluid Seals recently made our Process Seals Webinar available on the website.

Food & Beverage, Pharmaceutical, and Chemical Processing industries have different requirements than typical seals. Process seals need to have multiple media resistance. Unlike a traditional seal that only needs to be concerned with the media running through it, process seals also have to be designed to withstand the cleaning media being used.

This is the second section of the Process Seals Webinar, presented by Gallagher Fluid Seals & Dichtomatik Americas. This video discusses hygienic design principles for seals used in processing.

To download the webinar in its entirety, simply visit our Resources page, or click on the image at the beginning of the article.


This webinar was produced in conjunction with Dichtomatik Americas,  a Freudenberg brand.  With a broad array of products and materials, but more importantly comprehensive knowledge and technical expertise, Dichtomatik has earned its title as market leader for sealing solutions in food & beverage, pharmaceutical, and chemical processing industries.

NEW! Process Seals Webinar – Material Selection

Process Seals - Material SelectionGallagher Fluid Seals recently made our Process Seals Webinar available on the website.

Food & Beverage, Pharmaceutical, and Chemical Processing industries have different requirements than typical seals. Process seals need to have multiple media resistance. Unlike a traditional seal that only needs to be concerned with the media running through it, process seals also have to be designed to withstand the cleaning media being used.

This is the first section of the Process Seals Webinar, presented by Gallagher Fluid Seals & Dichtomatik Americas. This video discusses material selection for seals used in processing.

To download the webinar in its entirety, simply visit our Resources page, or click on the image at the beginning of the article.


This webinar was produced in conjunction with Dichtomatik Americas,  a Freudenberg brand.  With a broad array of products and materials, but more importantly comprehensive knowledge and technical expertise, Dichtomatik has earned its title as market leader for sealing solutions in food & beverage, pharmaceutical, and chemical processing industries.

FluoroXprene Reduces Emissions

One of the greatest challenges of the 21st century is the conversion to a resource-conserving, sustainable economy. With this in mind, Freudenberg Sealing Technologies is offering customers its FluoroXprene® family of materials to help contribute to this transformation. Originally developed for use in fuel lines, these materials have the potential for use in new, challenging applications thanks to their outstanding characteristics.FST FluoroXprene Automotive

FluoroXprene was developed to reduce the permeation of fuel vapors through the walls of fuel lines. This permeation makes a notable contribution to a vehicle’s hazardous emissions. But it is often overlooked when considering total emissions. FluoroXprene reduces the escape of fuel vapors through the walls of fuel hoses into the atmosphere, slashing them to a fraction of their usual amounts. And this is not just the case for standard fuels – alternative plant-based fuels such as E10 and E85 are also securely contained by FluoroXprene materials.

Continue reading FluoroXprene Reduces Emissions

NEW! Process Seals Webinar

Process Seals - DOWNLOAD NOW!Gallagher Fluid Seals recently made our Process Seals Webinar available on the website.

Food & Beverage, Pharmaceutical, and Chemical Processing industries have different requirements than typical seals. Process seals need to have multiple media resistance.

Unlike a traditional seal that only needs to be concerned with the media running through it, process seals also have to be designed to withstand the cleaning media being used.

This webinar will discuss:

  • Material specification and development
  • The importance of hygienic design
  • Material compatibility and flavor transfer

We will be posting portions of the webinar on our blog, so keep an eye out!  To download the webinar in its entirety, simply visit our Resources page, or click on the image at the beginning of the article.


This webinar was produced in conjunction with Dichtomatik Americas,  a Freudenberg Brand.  With a broad array of products and materials, but more importantly comprehensive knowledge and technical expertise, Dichtomatik has earned its title as market leader for sealing solutions in food & beverage, pharmaceutical, and chemical processing industries.

140 Beats per Second…

Freudenberg Sealing Technologies has developed a new sealing system for Atlas Copco, the leading global producer of rock drills. The system has made it possible to double the maintenance intervals for a new generation of machines used in harsh underground conditions.

The drill bit strikes the surface of the stone with a force of 25 tons up to 140 times per second. Its task: to drill 80 holes where explosive charges are inserted. They blast away rock for supply tunnels for underground mining or for road construction. The drill bits are driven by rock drills. Two factors are decisive in keeping operating costs low: On one hand, the holes must be drilled very quickly, even in hard stone such as granite, which requires very powerful forces. On the other hand, despite the strong forces, maintenance intervals are supposed to increase. With the development of its new machine, the COP MD20, Atlas Copco has resolved its conflicting objectives: Without a reduction in the machinery’s rate of advance, the company was able to double its maintenance intervals.

A new sealing system from Freudenberg Sealing Technologies was the key component in accomplishing this, as the metallic components, especially the piston that drives the drill bit, had been previously optimized by using special high-strength alloys. But the forces that are produced, especially during the bit’s recoil, are so high that they severely stress the seals in this high-pressure hydraulic system. If the seals develop wear, the result can be leakage, which has a highly negative effect on the relationship between the applied energy and the boring power – in other words, the system efficiency declines.

Rock Drills - Atlas Copco Cop MD 20
©Atlas Copco Rock Drills AB

Continue reading 140 Beats per Second…

Sealing Heavy-Duty Equipment

Article first appeared in Power Transmission Engineering blog on November 14, 2017.


Freudenberg Examines Sealing Requirements for Heavy-Duty Equipment

94 AU 30000 - New Polyurethane MaterialsThe seals and the hydraulic systems of any piece of mining, construction, agricultural or other heavy industry equipment operate under extreme conditions. Variable temperatures, aggressive hydraulic oils, dust and extended periods of operation place seals and their tribological systems under continuous duress. A new generation of material, 94 AU 30000, expands the boundaries for polyurethane use. This innovative compound can be used in standard cylinder applications where higher pressures, larger extrusion gaps, reduced internal friction, improved hydrolysis resistance and compatibility with bio fluids, among other factors, are important. DMRW2 hydraulic wipers made from 94 AU 30000 and sheet metal and the availability of this polyurethane as part of Freudenberg Sealing Technologies’ Xpress rapid replacement part service are applications discussed in the following article.

Today’s extreme environmental climates place extreme demands on the material and structure of the hydraulic seals used to maintain the performance and operation of heavy-duty equipment.  The excavators, tractors, backhoes and tunnel boring machines that grind through the earth every day must work harder, longer, cleaner and more cost efficiently than ever to feed the plant, build its infrastructure and harvest its natural resources.

Sealing requirements for these machines must now include high values for tensile strength and elongation at break, resistance to oils and ozone, high elasticity and abrasion resistance. Polyurethane materials (PU) have traditionally met these industrial requirements. In comparison with elastomers, PU has a four times greater capacity for mechanical resistance, as well as outstanding resistance to ozone. At the same time, it stands up well to the stresses of mineral-based fluids.

Continue reading Sealing Heavy-Duty Equipment

Secure, Hygienic Connections

Clamp Seals

Clamp seals guarantee fast and extremely secure tube connections in machines that are operated continuously. They are especially easy to install and re-separate. At drinktec 2017, Freudenberg Sealing Technologies presented its newly developed clamp seals, which not only reliably seal tube connections in production facilities – they also eliminate the costly conversion of connections to a “hygiene flange,” in accordance with DIN 11864. Unwanted over-compression into the interior space is prevented, guaranteeing secure, hygienic tube connections.

Continue reading Secure, Hygienic Connections

Sealing Systems for Hydraulic Cylinders

Hydraulic Cylinders in High-Load Bearing MaterialsThe right mixture does the trick – even for seals used in hydraulic cylinders. But the optimal interplay of the individual seals is a delicate matter. To save its customers a great deal of time and effort, Freudenberg Sealing Technologies (FST) has developed five preassembled sealing systems. They contain all the components needed for specific customer applications.

Until now, it took extensive experience and even more stamina to assemble a sealing package for hydraulic cylinders. To start with, the selection is huge: The FST catalog offers well more than 100 different rod and piston seals as well as wipers. Moreover, the individual seals have to function in combination, ideally supporting and complementing one another. Due to this mutual influence, every change has an effect on the functionality and performance of neighboring components. The approach to the result is gradual and cautious.

SIMPLER, FASTER, INTEGRATED…

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. Continue reading Sealing Systems for Hydraulic Cylinders

VIDEO: The Polyurethane Generation

Freudenberg Sealing Technologies has introduced a new generation of polyurethane for seals that set new standards. Freudenberg’s development of its own materials is an important core competency. The company has succeeded in manufacturing a basic material for seals with a far longer operating life than the polyurethane materials used so far.

Watch the video below to see how the seals of today are fulfilling the requirements of tomorrow.

Continue reading VIDEO: The Polyurethane Generation