Fluid Power World

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Trelleborg highlights sealing developments, supply chain services at IFPE 2017

At this year’s IFPE, Trelleborg Sealing Solutions will demonstrate the power of its Service PLUS program, which simplifies the workflow across every discipline of a fluid power professional’s value chain; from engineering to logistics, manufacturing to the aftermarket. In addition, design engineers working in power transmission, motion control and fluid power industries will see first-hand […]

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Parker Hannifin planning sealing focus at Hannover Messe 2017

Cleveland-based Parker Hannifin has so many divisions—covering so many types of products—that it can be difficult to keep up with the company’s initiatives and products. But I had the chance to catch up with Christine Stehmans, Marketing Communications Manager for the Engineered Materials Group-Europe, at the recent Hannover Messe press preview. The Group was formed […]

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Comparative test report for Hallite’s Armorlene HLX bronze-filled PTFE available

A few months ago, Hallite announced worldwide availability of its new Armorlene PTFE product and material portfolio which encompasses more than 30 product profiles, 26 materials and 18 Armorlene PTFEs. Today, the company is pleased to announce that comparative product testing of an important member of that product family—Hallite’s Armorlene HLX Bronze-Filled PTFE—is complete, and […]

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Trelleborg Sealing Solutions continues its trade show ThinkTank concept at MD&M West

Trelleborg Sealing Solutions continues to spark innovative ideas through its trade show presence, as it expands its TrelleborgThinkTank concept, which I wrote about when it was first launched last year at OTC. This year at MD&M West, the company is encouraging attendees to share ideas and encourage innovation using the hashtag #TrelleborgThinkTank. Its aim is to capture […]

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C. Otto Gehrckens hosts O-ring Academy seminars

C. Otto Gehrckens GmbH & Co. KG (COG), hosts its own O-ring Academy seminars for designers, engineers and users of fluid power seals. First up is the compact seminar, “O-rings explained in detail” on March 30 at the company’s headquarters in Pinneberg, Germany (near Hamburg). In addition to learning how to properly use O-rings, and understand their […]

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Seals at IFPE 2017

The upcoming IFPE show, in Las Vegas from March 7-11, will allow fluid power designers to see the latest in sealing technology—a constantly evolving part of the industry. Following is a description of how they’re used in mobile machinery, as well as a listing of what IFPE booths you can visit for more information on seals. Seals are the unsung […]

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Minnesota Rubber & Plastics sealing materials certified for food and beverage industries

Quadion LLC, Minnesota Rubber and Plastics (MRP) introduces a new portfolio of materials specifically formulated to meet all of the major regulations for food and beverage contact. These materials are now available with certified compliance to the European Commission framework regulation EC 1935/2004, US FDA Title 21 CFR and NSF Standard 61 and 51. These […]

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What makes a seal for hydraulics different from a seal for pneumatics?

The first issue when talking about pneumatics vs. hydraulics is always going to be severity of the duty. Obviously, the durometer of the seal is very important. When you get into a 70, 80, or 90 durometer seal, it becomes very resistant to being smushed. As the pressure increases to, say, 3,000, 4,000, 5,000—maybe even 10,000 psi […]

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What if I have an old cylinder that I can’t get seals for anymore?

Ages ago, you might have had some cylinders that had V-Packings, and you could screw tight on the washer to kind of make them fill up the space again—but they had high leakage, not to mention high maintenance, and they’re just a pain. If you can source those, the best thing to do is have […]

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Can any seal be used in a cylinder if it’s about the same shape?

The shape of a seal is certainly an important aspect. For example, if you have a U-cup seal in a piston, you want to use U-cup seals as well unless the customer’s specifying that you change it—but you may have to change the piston in that case as well. The shape is important. In those […]

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How often should I replace the seals in my cylinders?

There is a lot of variability in how often you have to change seals in a cylinder. You have to ask yourself, how often are you using the cylinder? That’s the first question. How fast is it moving? High velocity seals? How contamination free is your fluid? Ideally, you should never have to change your […]

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What tools can be used to simulate the sealing efficiency of different seal pipes or different materials?

There are some tests that you can run. If you have some machinery around, for example, you can pressurize both sides of a cylinder to test the effectiveness of a piston seal. Or you can, say for example, pressurize one side of the cylinder with no hose attached to the other port and the rate […]

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What kinds of seals are there in a hydraulic cylinder?

It is important where you put a seal—every part of a cylinder has seals, and they are there for specific reasons. Rod wipers are the ones that are most exposed to the elements in any hydraulic cylinder application. Rod wipers have a groove that pushes it against the rod itself. Any time the cylinder retracts, […]

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Why is hydraulic fluid compatibility important for seals?

In a fluid power system, fluid compatibility is often discussed with respect to seals. This means, does the chemical composition jibe with the fluid composition? Chemical composition is the composition of the seal itself. What type of rubber, essentially, is it made from? Generations ago, fluid power seals were made of things like leather and […]

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Parker patents stainless-steel flat-face sealing ring for use with tube fittings

Parker Hannifin was recently issued U.S. Patent No. 9,453,600 for a new stainless steel flat face sealing ring for use with tube fittings in extreme temperature applications. The new seal design was developed by engineers at the Parker Tube Fittings Division and is a principal design feature of the Parker Seal-Lok Xtreme line of flat […]

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How can hydraulic lubrication management optimize seal performance?

The concept of lubrication management looks at adjusting the lubrication conditions of all single sealing elements within a sealing system to ensure that the load on each element can be reduced and performance around friction-wear-lifetime can be optimized. Constantly increasing performance requirements for industrial equipment and the reciprocating movements involved require this. “When properly engineering […]

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Hallite Announces availability of Armorlene PTFE products and materials

Hallite Seals International announces availability of its new Armorlene PTFE product and material portfolio, a high-performance polytetrafluoroethylene (PTFE) product and material portfolio that encompasses more than 30 product profiles, 26 materials and 18 Armorlene PTFEs. The new Armorlene PTFE portfolio expands the history and success of Hallite’s PTFE products and materials in the German and […]

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Can fluid contamination cause components to fail?

Hydraulic system contamination left unchecked can result in operating failure, expensive equipment damage and major downtime. There are many sources for possible contamination, from both outside and inside the system. Often, hydraulic system contamination can be prevented before it starts if the system is designed correctly to minimize and prevent contamination, according to Lih Fang […]

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Freudenberg-NOK’s Jandreau wins Women Worth Watching award from Diversity Journal

Freudenberg-NOK Sealing Technologies announced that Vicky Jandreau, director of its lean and Six Sigma GROWTTH program in North America, has been recognized by Profiles in Diversity Journal with a “Women Worth Watching” award. Profiles in Diversity Journal’s 15th Annual Women Worth Watching Awards works to identify, promote and support women in leadership and the organizations […]

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New product range of high-performance TPU seals

With COG VarioPur, the independent seal manufacturer C. Otto Gehrckens presents a new product range in the premium segment. The three high-performance materials in the VarioPur series are based on thermoplastic polyurethanes (TPU/AU). Both the abrasion and the extrusion resistance are at least five times higher than those of the traditional material NBR, which has […]

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How can exclusion seals extend hydraulic motor life?

Few people think of the motor’s exclusion seals as key components in a piece of equipment, but these unsung heroes can make all the difference, particularly in harsh environments. When a motor’s pressure seal is compromised, the machine starts leaking oil into the environment, which immediately impacts your bottom line. Lost productivity and maintenance costs […]

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Freudenberg-NOK’s Troy, Milan Ohio facilities win Supplier Gold, Bronze from Caterpillar

Freudenberg-NOK Sealing Technologies’ Troy and Milan, Ohio manufacturing facilities have been awarded Gold and Bronze level Supplier Quality Excellence Process (SQEP) certification from Caterpillar Inc. Caterpillar created the SQEP to recognize those suppliers that demonstrate their commitment to excellence and drive a “zero defects” culture within their organizations. Troy, which received Gold status, and Milan, […]

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Expanding your contamination control options online

One of our passions here at Fluid Power World is providing you with all your need-to-know engineering information not just in print, but online—whether through traditional websites or via a host of social media platforms such as Twitter, LinkedIn and YouTube. In addition to our main web portal, which features a broad look at fluid…

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New algorithm optimizes cylinder guidance systems and reduces seal failure

A new mathematical algorithm from System Seals removes the guesswork in selecting cylinder guidance systems while also reducing seal failure. By Kurt Sassmannshausen, System Seals Product Development Manager Failing to properly calculate guide-band loads, rod deflections and the stress and strains distributed across cylinder guidance systems is a leading cause for guide-band fracturing and seal failure. […]

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