Among the announcements coming out of Hannover this week, Argo-Hytos introduced the new CFP compact filter pack. It’s a multi-purpose off-line filtration unit dedicated for servicing compact power packs on a daily basis, not just during start-up or breakdowns. It’s designed for tanks ranging from 1 to 100 l in size. According to the company, […]
Trelleborg Sealing Solutions has carried out a series of tests to show the importance of fluid type and seal material choice in “ensuring optimum seal performance and service life.” The company worked with fluid producer MacDermid to test the effect of water glycol fluids on common seal materials. Together the engineers for both companies tested […]
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Technical users know the problem all too well: Installing O-rings in cramped installation spaces without damaging them or the removal of stuck O-rings from grooves without causing damage to the machine is often a tedious and above all difficult affair. Often, screwdrivers or simple plastic tools are used to perform the task. These tools are […]
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Parker Hannifin has introduced its new nobrox compound, which exhibits excellent wear resistance, chemical resistance and resilience, reliability, ease of assembly and economy. The new material is particularly well suited for use as a sealing element, guiding element and anti-extrusion element for hydraulic as well as many other sealing technology applications. With its potential as […]
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Freudenberg Sealing Technologies showcased a new generation of low-friction transmission seals designed to save fuel, lower emissions and extend the operating life of industrial powertrains at the 2017 International Fluid Power Expo in Las Vegas. Freudenberg’s Levitas and Levitorq components are part of the company’s Low Emission Sealing Solutions (LESS) product portfolio. Seals are responsible […]
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A few of the important parameters that one needs to consider while selecting a seal are system operating pressure, seal material compatibility with fluid and fluid operating temperature, resistance against extrusion, expected service life, ease of installation, cost of procurement and logistics. System operating pressure is one of the predefined seal limitations. Different types of […]
As it prepares for the Offshore Technology Conference (OTC) in May, Trelleborg Sealing Solutions announced that it has posted test certification for almost 30 of its best-in-class materials for the oil and gas market for the first time ever. This data is made available online at Trelleborg’s dedicated oil and gas microsite for seals, reinforcing the […]
Mobile hydraulics, and those shiny clean cylinders that abound in them, could not function without good, quality hydraulic seals. That’s why I’ve already spent a fair amount of time chatting with some of the major sealing companies throughout the past two days of IFPE 2017. Here’s a brief round-up of some of the innovative sealing […]
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Trelleborg Sealing Solutions launches an its Roto Glyd Ring V, which is primarily intended for double-acting pressure within severe working conditions that require extended rotary service. The seal is specifically engineered for machinery where a high pressure to velocity value is required to allow equipment to run at the highest possible speeds in high pressures for […]
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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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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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 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 […]
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 […]
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 […]
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 […]
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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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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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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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 […]
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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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 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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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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