Tag Archives: Parker Hannafin

Engineered Materials and Sealing Solutions for Flow Batteries

Article re-posted with permission from Parker Hannifin Sealing & Shielding Team.
Original content can be found on Parker’s Blog.


Sealing can often be a frustrating challenge when dealing  with flow batteries. Determining what materials are compatible with certain chemistries or developing a profile that provides optimal sealing under available compression can be a time-consuming task for those outside the sealing industry. A trial and error approach can have a significant overall cost impact through multiple prototype iterations, prolonged testing, and ultimately, delaying product commercialization.

Specialized support

Parker’s design and material engineers can provide support to your team in the critical, early stages of product development. With hundreds of engineered elastomeric materials to choose from, our team can identify and recommend a compound that works with your specific electrolytes or other fluids. With the exceptionally long lifetime requirements of flow batteries, our homogeneous rubber provides the elasticity needed to handle the many charge-discharge cycles the battery will see in its life.

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The Difference Between Thermal Conductivity and Thermal Impedance

Article re-posted with permission from Parker Hannifin Sealing & Shielding Team.
Original content can be found on Parker’s Blog.


The Difference Between Thermal Conductivity and Thermal Impedance

Thermal Interface Materials (TIMs) are useful for thermal management in electronic components, as they enhance heat transfer from a heat-generating component to a heat dissipater, or heat sink. One important aspect when selecting a TIM for your application is knowing the material’s ability to transfer heat, which is often given by way of thermal conductivityThermal_Montage and/or thermal impedance.

Across the industry, manufacturers often publish thermal conductivity in units of Watts / meter-Kelvin as well as thermal impedance in units of °C – inches2 / Watt on their datasheets. So, what is the difference between these two, and how should you consider them when selecting a TIM?

Thermal conductivity is a material property and describes the ability of the given material to conduct heat. Therefore, when a material’s thermal conductivity is high, the material is a better thermal conductor. This property is independent of material size, shape or orientation in a homogeneous material, and because of this, thermal conductivity is an idealized value.

To understand thermal impedance, we must first understand thermal resistance and thermal contact resistance.

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Compression Controlled Gaskets for Food and Pharmaceuticals

hygenic2At Gallagher Fluid Seals, we do our absolute best to understand the needs of our customers.  As a Top-25 Parker Distributor, we have a myriad of products at our fingertips to improve your processes.

One relatively new Parker product is their line of hygienic sanitary gaskets, coming out of the company’s integrated sealing systems (ISS) Division in Lynchburg, VA.  These compression controlled gaskets are used widely in the food processing and pharmaceutical industries, being USP Class VI, FDA, and NSF approved.

Here’s what Parker has to say about these products:

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Reduce Standard Groove Size with Parker Diamond Seals+

Parker Diamond SealsParker Diamond Seals are designed to be a compact, robust axial seal alternative to standard cross section seals. Their unique design allows for reduced compression forces, making them ideal for small, lightweight housings in aerospace and military applications.

Narrow cross section
With a tall and narrow diamond-like cross section, the diamond seal groove is 60% narrower than traditional grooves for comparable seal heights. The narrow cross section of the seal allows it to be used in tight corners and around small holes. The groove width savings allows housing to become thinner, reducing the weight assemblies and is less expensive to machine when compared to standard grooves.

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