Monthly Archives: April 2019

  1. Long Lead Times for Thordon? Try Vesconite - Available for delivery... NOW!

    In 2018, Vesconite Bearings made a commitment to the U.S. market, increasing its readily available stock of Vesconite polymers and Vesconite Hilube in order to deliver quickly to customers.

    Vesconite Bearings manufactures two main product types:

    • Vesconite is a specialised hard-wearing thermopolymer designed for challenging operating conditions, Vesconite gives up to 10 times the life of traditional bronze or nylon bushings. Combining internal lubrication, a low friction coefficient and low wear rates, Vesconite does not require external lubrication, even where conditions are dry and dirty.
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  2. BlackHawk Seals - The RBR Buffer Seal

    The BlackHawk RBR Buffer Seal

    The RBR Buffer Seal by Blackhawk Seals is a uni-directional rod seal designed to function as a buffer seal, protecting the primary rod seal from high pressure intensification and impulses. The RBR Buffer Seal provides the majority of the sealing function, while allowing a small amount of fluid bypass to assist in the pressure actuation of the primary rod seal. The use of the RBR Buffer Seal will greatly extend the life of the primary rod seal by protecting it from excessive pressure conditions. Pressurized fluid between the RBR Buffer Seal and the primary rod seal is allowed back into the cylinder via the slotted outside diameter rib, flexible outer sealing lip and side wall slots. This relieving function prevents excessive pressure build-up between the RBR Buffer Seal and the primary rod seal, which results in the premature failure of the primary rod seal due to excessive frictional heat build-up and seal extrusion. A high-performance Backup Ring is nested into the Buffer Seal inside diameter to prevent seal extrusion at high pressure and elevated temperatures. Both ID and OD sealing lips are knife trimmed to provide reliable sealing performance.

    The RBR Buffer Seal is a dual element seal design made from a high grade of water resistant polyurethane material that can withstand the inherent strain of heavy duty mining and mobile cylinder applications. The Backup Ring provides superior extrusion resistance during high pressure operation and allows for increased extrusion gaps. When used in conjunction with a high performance primary rod seal, the RBR Buffer Seal provides extended service life and effective zero leakage sealing performance for medium and heavy-duty cylinder applications.

    The RBR Buffer Seal can be utilized in a variety of demanding hydraulic cylinders requiring superior reliability and lasting performance, which is particularly suited for earth moving and other mobile equipment applications. The product range consists of industry standard sizes to accommodate imperial (inch) dimensioned housings.

    So, what's the RBR buffer seal material?

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  3. Parker's Low Temperature FFKM Provides Critical Oil & Gas Sealing Solutions

    Article re-posted with permission from Parker Hannifin Sealing & Shielding Team.

    Original content can be found on Parker’s Website.

    Oil & Gas Sealing Solutions with a Low Temperature FFKM

    Technology advancements and new-to-world discoveries are constantly creating a new series of challenges for seal materials in the Oil and Gas industry. In today’s environments, seals are being pushed to perform in temperature, pressure and chemical extremes never before thought to be obtainable with rubber products. Application pressures exceeding 20,000 psi, service temperatures ranging from -40°F to upwards of 500°F, and exposure to some of the most aggressive media on the planet are placing immense amounts of stress on sealing elements. Parker’s FF400-80 compound has been formulated to provide a solution to all of these sealing challenges.

    FF400-80 Compound - FFKM Product Features

    • Temperature range: -40° to 527°F
    • Best-in-Class low-temperature FFKM
    • Excellent compression set resistance
    • RGD resistant per ISO 23936-2 and TOTAL GS EP PVV 142
    • Sour service H2S resistant per ISO 23936-2
    • Maintained resilience at high pressures and low temperatures
    • Great for use in HTHP applications

    Sounds great, but what's the catch?

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  4. Tackling Flavor Transfer with Seals Made from Globally-Certified Materials

    The popularity of multi-flavor drink dispensers, those touch screen wonders that offer dozens of beverage and flavor options to consumers, has grown during the past decade. Manufacturers are installing these complex machines in venues and locations throughout the world.

    Elastomers and flavor transfer

    But what’s great for an individual customer – a cherry-ginger-lime cream soda, for example – can play havoc with the elastomer seals inside the machine. Add in hygienic cleaning requirements and proper food contact certifications and equipment manufacturers can find themselves spending months chasing challenges like flavor transfer, leaks and material compliance approvals.

    Freudenberg-NOK Sealing Technologies, a leading specialist in advanced sealing applications, has a portfolio of solutions to resolve these issues. The company, which runs the business operations for Freudenberg

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  5. H75VN Mechanical Seal for Cumene Pump Station

    Retrofitting a Pump with an EagleBurgmann H75VN

    Cumene, the common name for isopropylbenzene, is an aromatic hydrocarbon and a colorless liquid under atmospheric conditions with a characteristic smell. It is a component of crude oil and refined fuels and is mainly used in the production of phenol.

    The Problem

    Ineos in Gladbeck and Degussa in Marl, both located in Germany, are supplied with cumene by a pipeline. The pump station for this pipeline is situated inside the chemical industry park in Marl and is operated by Degussa Infracor. Cumene is classified as hazardous to the environment, so the “TA-Luft” directive (German Clean Air Directive) has to be considered for any sealing solution.

    Originally, the pump was equipped with a Flowserve

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  6. The Lifespan of a Gasket

    The Dreaded Gasket Blowout Call

    Have you ever received the dreaded 2 a.m. call from plant staff saying that things are at a standstill – production is down?

    You arrive at the plant, walk through the parking lot, coffee in hand, and head to the locker room. When you come out on to the plant floor, there are several people staring at you with a look of panic on their faces as steam or process chemical sprays from a pipe flange.

    Prognosis……gasket blowout.

    You think to yourself “didn’t we just replace that gasket?”, or perhaps “we should have replaced it during the last shutdown but chose not to because of time constraints or cost cutting.

    If this scenario is new to you, you are lucky and you can go back to sleep… the 2 a.m. call was a wrong number. If it’s not new to you, this means you are most likely a Plant Supervisor, Maintenance Manager or Plant Personnel in some capacity.

    Roll up your sleeves, grab your torque wrench and let’s get to work!

    Gasket Lifespan

    Picture of NSF Compliant GasketsIf I had a nickel for every time someone asked me, “How long will my gasket last?” I would be a rich man. As you can probably guess, “How long will my gasket last?” is a loaded question to which the practical, factual, and political answer is… an Application Engineer’s nightmare!

    A gasket may last 5 years, or it could last 20 years. I cannot give you an exact date or lifespan of a gasket; however I can give you some insight into factors that will give your gasket the best chance at a long and prosperous life between the flanges.

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  7. Thermoseal WaterSIL

    WaterSIL is a universal high-pressure gasket material that is certified to NSF 61 and meets strict chemical leaching requirements.

    Specially formulated compressed gasket material based on NBR and aramid fiber, Thermoseal WaterSIL is a universal high-pressure gasket material that is certified to NSF 61 and meets strict chemical leaching requirements.

    Applications: NSF/ANSI 61 certified gasket material for use in potable drinking water systems and fixtures for public drinking water, food and beverage, hospitality and plumbing supplies.

    Benefits of Products Certified to NSP/ANSI 61 Drinking Water System Components

    Potable water systems have miles of piping and other devices such as pumps, meters and valves. All of these components require gaskets. Gasket materials certified to NSF/ANSI 61 ensure the safe passing of water on its journey to the consumer's tap.

    NSF/ANSI 61 establishes minimum health effect requirements for the chemical contaminants and

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  8. Measuring Metal Hose Assembly Lengths

    "Which way do I measure this metal hose?"

    A common question among some customers who use metal hoses is: "Which way do I measure this metal hose?" Well, there's a few different options.

    1. The first method is to measure the overall length of the assembly.
    2. Or, the live flexible length of the hose assembly can be measured.

    Live Length vs Overall Length

    Traditionally, the live length - or the amount picture showing live length versus overall lengthof flexible hose between the fitting - is used to determine whether there is sufficient hose length to accommodate

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  9. What is the ZAVA® Seal-Ring

    Here Comes the ZAVA® Seal-Ring

    "At last" - that's the reaction of those who have been plagued by the constant need to change rubber seals on VFA and CCA filters at pulp plants all over the world. As an electrician at SCA Pulp in Sundsvall, Frans Sramek is the man that has solved this well-known, and seemingly hopeless problem. The ZAVA seal can be mounted in minute and cuts maintenance costs substantially.

    "It’s always a pleasure to be able to offer our customers products on which they make money,” says Lars Bylund, Customer Service Division at Sunds Defibrator.

    Four hours work in one minute

    One of ZAVA® Seal-Ring's prominent features is ease of installation. The rubber ring is locked in place using a quick-connect coupling, which is impossible to separate once it has been assembled. The designer is reluctant to say more. Patent protection is important.

    As far as maintenance is concerned, vulcanizing is just a memory. The seal-ring

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  10. RFID Tags and Medical Devices

    Article re-posted with permission from Parker Hannifin Life Sciences Division.

    Original content can be found on Parker’s Website.

    RFID Tags and Medical Devices

    Preventable Medical Errors Prompts U.S. FDA's UDI Rule

    The influential 1999 report To Err is Human (National Academy of Sciences, Institute of Medicine) reported that preventable medical errors caused at least 44,000 and perhaps as many as 98,000 deaths each year, with total costs of between $17 and $29 billon. One response to that and other reports was the U.S. Food and Drug Administration’s Medication Barcode Rule of 2004, which built on the existing National Drug Code (NDC) — a universal product identifier for drugs. In turn, the FDA Amendment Act of 2007 directed the FDA to create a Unique Device Identifier (UDI) system for most medical devices distributed in the United States.

    Automatic Identification and Data Capture Technologies for Medical Devices and Instruments

    The FDA UDI Final Rule states: “ Automatic identification and data capture (AIDC) technology means any technology that conveys the UDI or the device identifier of a device in a form that can be entered into an electronic patient record or other computer system via an automated process.” AIDC (aka auto-ID) for medical devices may employ — at least in theory — any automatic data capture technology, including bar codes, radio frequency identification (RFID), magnetic stripe cards, optical Picture of Medical Devicecharacter recognition (OCR), smart cards, etc. But from a practical design and user application point-of-view, most medical device designers are looking to either RFID tags or bar code technology.

    Barcode Labels vs. RFID Tags

    • RFID systems can have their reading distances “tuned” over a broad range through tag selection, tag antenna size and configuration, choice of tag reader/reader power, and Parker Chomerics RF shielding technologies.
    • Barcode readers must have direct line of sight; RFID readers do not.
    • Barcodes require either a specific orientation to their reader or a larger reader that is omnidirectional; RFID tags can be read in virtually any orientation.
    • Barcode readers read one label at a time; RFID readers can read hundreds or thousands of tags at once.
    • RFID tags can contain much more information than is practical on a most barcodes.
    • RFID tags can be written-to (and/or locked and encrypted) at their point of use. For example, the number of autoclave cycles a device has endured could be recorded on both its tag and a database: data collection and its use become real-time.

    So, what are the unique advantages of built-in RFID tags for medical devices?

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