Flexible Solutions

NEMA, UL, CSA, & IEC Ratings Explained for Enclosures

Posted by Ben Hvidston

May 1, 2025 10:09 AM

NEMA (National Electrical Manufacturers Association), UL (Underwriters Laboratories), CSA (Canadian Standards Association), & IEC (International Electrotechnical Commission)—if you’ve ever felt overwhelmed by enclosure standards, our third blog from the Enclosure Institute™ is your go-to resource. 

With so many standards guiding performance, safety, and environmental protection, it can be difficult to know which ones truly matter for your application.  Whether you're designing for industrial environments, outdoor use, or specialized equipment, understanding these standards is critical—and easier than you think.

Disclaimer: The Enclosure Institute™ is a free educational resource created by Marian, Inc. and Rogers Corporation to help engineers navigate enclosure sealing with expert guidance.

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Topics: Foams, IP Rating, BISCO Silicone, PORON, ingress protection, gasket, Electronics, Enclosure Institute, seals, enclosures, Rogers Corporation

Enclosure Design Basics: Applications, Sealing, & Protection

Posted by Ben Hvidston

April 24, 2025 9:00 AM

What exactly are enclosures—and why does sealing matter so much? In this foundational blog from the Enclosure Institute™, we break down the role of enclosures across a range of industries, from EV charging to medical devices. 

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Topics: Foams, EMI Shielding, IP Rating, LED Lighting, BISCO Silicone, PORON, medical device, ingress protection, gasket, Electronics, Enclosure Institute, seals, enclosures, Rogers Corporation, Data Center

Discover the Enclosure Institute™: Free Training for Better Sealing

Posted by Ben Hvidston

April 17, 2025 9:55 AM

Sealing challenges can make or break the performance of an enclosure. That’s why Marian and Rogers Corporation have teamed up to launch the Enclosure Institute™ —a free educational series designed to help engineers tackle real-world sealing challenges with confidence. 

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Topics: Foams, BISCO Silicone, PORON, Enclosure Institute, seals, enclosures, Rogers Corporation

3 Common Misconceptions About Durometer

Posted by Andrew Bonar

July 9, 2019 9:32 AM

 
The Shore durometer (pictured right) is a scale for measuring the hardness of a material, such as rubber, plastic, thermal  plastics (TPE), and rigid plastics. The term "durometer" is often used to describe a material's rating on the scale, for example “this material has a durometer of 60.”
  
It's worth noting, there are a variety of durometer scales since elastomeric and plastic resins vary over a wider range than one scale can accommodate. Download our comparison chart to see how these scales overlap.
 
Durometer hardness is one of many physical properties considered when selecting a material for a specific application. Beware of some common misconceptions. Durometer hardness is often inaccurately confused with the properties described below. 

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Topics: Foams, Compression Force Deflection, PORON, Elastomers, Material selection

PORON EVExtend® For Use In EV/HEV Li-ion Pouch Cell Batteries

Posted by Katie Sullivan

May 29, 2019 1:01 PM

Materials for Battery Solutions - PORON EVExtend®

Our valued material supplier, Rogers Corporation, has released PORON EVExtend® polyurethane foam material. This material is ideal for battery pads for EV/HEV li-ion pouch cell batteries. The EXExtend 4701-43HBF offers an increased flammability rating of HBF, or HF1 (product dependent). 

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Topics: Foams, PORON, EV, HEV, Material selection, Thermal Gap Filler Pads, Thermal Gap Pad

Tolerance Challenges When Die Cutting Materials

Posted by Katie Sullivan

January 17, 2019 9:20 AM

Technological advances in properties of soft, flexible foam and elastomeric materials have continued. These thick, soft, flexible foams and elastomers like PORON foam, silicone foam, and more are ideal materials for sealing, gasketing and cushioning across many industries and applications.

They compress, form to irregular surfaces, bend, and flex within an application without damage or delamination, but from the perspective of the converter, these materials may also introduce challenges when trying to achieve the tight dimensional tolerances common in metal and plastic-molded parts.


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Topics: Foams, BISCO Silicone, PORON, Elastomers, Tolerance

Die-cut Solutions for Plastic Injection Molders

Posted by Andrew Bonar

June 5, 2017 1:49 PM

Why is it so important that plastic injection molding companies provide value added services and secondary manufacturing services to their customers after molding their parts?

The answer is easy! Many end-customers of plastic injection molders are looking for vendor consolidation and supply chain simplification. They want to cut out and skip steps in their supply chain, sequentially helping to reduce costs and save time.

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Topics: Pressure Sensitive Adhesive, Foams, manufacturing techniques, Acrylic Foam Tape, PORON

Antimicrobial Sealing Gasket - Application Story

Posted by Katie Sullivan

March 29, 2017 2:05 PM

In this newly released application story, a global designer and manufacturer of critical intercommunication devices experienced a gasket failure allowing moisture to leak and compromise the internal components of their console. It's remarkable the amount of damage a single drop of water can do. Moisture often contains impurities and minerals that remain even after the water evaporates. Between the moisture and these remaining elements, the contamination can cause short circuits, corrosion, and mechanical problems. A malfunctioning device leads to recalls, replacements, and eventually a poor reputation. The company in this story did NOT want to deal with any of this. 

The intercom console product was intended to be used in medical office settings. Cleanliness and sanitary standards were very important for the high-touch surface of this device. The console was sprayed with liquid cleaners often. The console housing required a reliable sealing gasket to keep moisture out.  

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Topics: Foams, PORON

Die-Cut Solutions for Vibration Control: Damping vs Isolation

Posted by Katie Sullivan

March 15, 2017 11:37 AM

Just about everything that has been engineered is likely to experience vibration. Unfortunately, it has been proven that vibration can be responsible for causing extreme damage to some applications. The source of vibration can come from impact, internal motors or external sources. 

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Topics: Foams, PORON, Damping

3 Questions About Foam Compression Set Resistance

Posted by Katie Sullivan

January 18, 2017 4:34 PM

When choosing a foam for a product design, one feature that should be considered is the compression set resistance of the foam. C-Set is one of the most important characteristics to consider, and this blog post answers three basic questions to explain why. 

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Topics: Foams, BISCO Silicone, PORON, compression set resistance, Elastomers

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