Stop the Noise with Custom Acoustic Insulation

Custom Acoustic InsulationCustom acoustic insulation absorbs, transmits, or redirects sound waves – vibrations in the air that pass-through objects and result in audible sound. Noise, or unwanted sound, is measured in decibels (dB) and has a specific frequency distribution that’s measured in Hertz (Hz).

Unlike some noise control products, custom acoustic insulation can be “tuned” to address specific frequencies. Examples include the low-frequency rumble of a big diesel engine and high-frequency sounds like squeaking and squealing.

Custom insulation can strengthen product designs, but engineers need to know which questions to ask and what types of solutions are available. In this introductory article, you’ll learn about the basic elements of noise control. You’ll also learn about the basic types of acoustical materials and how they’re fabricated. (more…)

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Cold Bonding vs. Injection Molding for Finished Gaskets

Finished Gaskets - BlogCold bonding for finished gaskets joins cut lengths of rubber without the use of heat. This bonding technique isn’t performed under low-temperature conditions but is manual process that requires a brush and glue. By contrast, injection molding is a semi-automated process that uses a C-press machine with a heated barrel, metal plates, and tons of pressure. To join cut lengths, uncured rubber is used.

By understanding how these joining processes work, engineers can make better decisions about which types of finished gaskets to choose. It’s also important to understand the advantages of disadvantages of each bonding technique. In this week’s article, we’ll compare cold bonding with injection molding in terms of capabilities, costs, and quantities. (more…)

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Window Channel Selection Tips

Window ChannelWindow channels are rubber gaskets that hold window glass in place and help to secure window frames. They also eliminate rattling and provide protection against wind, water, dust, and debris. Applications for window channels include mobile equipment, defense, medical and health, stainless steel and food equipment, infrastructure, and aerospace.

For engineers and product designers, window channel selection begins by understanding the types of products that are available. It’s also important to define your application requirements and to compare product specifications. In this article from Elasto Proxy, you’ll learn how to select window channels that provide the sealing and insulation you need. (more…)

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Four Common Shapes for Extruded Rubber Seals

Shapes for SealsThere are four common shapes for extruded rubber seals. Do you know which shape is the right choice for your gasket application? Engineers and seal designers can choose P-shapes, D-shapes, E-shapes, and lip seals. Purchasing agents can either order cut lengths or buy spliced gaskets.

In this article from Elasto Proxy, you’ll learn when to choose and how to use the four common shapes for extruded rubber seals. We also invite you to stay tuned for a series of short videos that will explain what you need to know about P-seals, D-seals, E-seals, and lip seals. (more…)

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Bulb Trim Selection Tips

Bulb Trim Bulb trim provides sealing and insulation for doors, hatches, and enclosures with rounded corners. These industrial rubber products have separate bulb and retainer sections, each of which can have a different durometer or hardness. The bulb forms a seal under low-to-medium closure force. The retainer or trim is pressed into place over a flange and may have an integral tongue or metal clips to promote attachment.

Elasto Proxy supplies a wide variety of bulb trim seals and can custom-fabricate finished gaskets that save time and money on your assembly line. In this article, you’ll learn how to choose the right bulb trim for your application. Whether you work in engineering, procurement, or production, compound selection and part dimensions are critical. Product features vary, too. (more…)

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Gasket Compression in Metal Housings and Assemblies

Gasket CompressionGasket compression in metal housings and assemblies can support sealing or contribute to gasket failure. That’s because rubber gaskets are resilient, but only to a point. Compressing a gasket within allowable limits forms a reliable seal. When a gasket is over-compressed, however, the rubber won’t rebound when the compressive stresses are removed. This creates a gap between the gasket and the surface of the housing or assembly. Gaps cause leaks, and seals that leak won’t support your designs.

Material scientists calls the permanent deformation of the gasket material “compression set”, a term that’s used widely but not always fully understood. Engineers need to know the basics of compression set, but they also need to consider its limitations as a test method. With housings and assemblies, it’s essential to account for the entire application environment, including variables such as temperature and vibration. Relaxation, a related phenomenon, is also associated with gasket compression. (more…)

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Four Ways to Cut Rubber Products

Cut Rubber ProductsWhat’s the best way to cut industrial rubber products like seals, gaskets, and insulation? Manual cutting, die cutting, water jet cutting, and abrasive water jet cutting each offer advantages. They also meet different business and technical requirements. As this article from Elasto Proxy explains, choosing the right cutting method for your application requires a complete and careful analysis. (more…)

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Noise Control and Acoustic Insulation: Sound Sources and Frequencies

Noise Control and Acoustic InsulationAcoustic insulation absorbs, transmits, or redirects sound – a form of energy that travels in waves. Unwanted sounds, or noise, aren’t just unpleasant to hear. They can harm human health, jeopardize worker safety, and contribute to structural fatigue. The consequences of noise can be severe, but its characteristics are sometimes misunderstood.

In Part 1 of this series, Elasto Proxy shared a surprising example of two machines running at different decibel (dB) levels in the same room. In Part 2, we’ll examine some other sources of noise in the industries we serve. Importantly, you’ll learn why acoustic insulation must account for more than just a sound’s source. Frequency, the speed of the change of the sound, is a key design consideration for noise control. (more…)

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Nitrile vs. Neoprene: What’s the Difference?

Nitrile vs. NeopreneWhat’s the difference between nitrile and neoprene for seals, gaskets, and insulation? Both elastomers provide good resistance to compression set and tearing. They withstand the same range of service temperatures, too. Some grades of neoprene offer excellent resistance to abrasion, but nitrile is known for its abrasion resistance at elevated temperatures.

Nitrile and neoprene rubber have many similarities, but there are some important differences between these elastomers. In this article from Elasto Proxy, you’ll learn when nitrile is recommended and when neoprene is used. You’ll also compare these common compounds across all a full list of material properties so that you can make the right choice for your application. (more…)

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Acoustic Insulation: What You Need to Know About Noise

Acoustic InsulationAcoustic insulation absorbs, transmits, or redirects sound – a form of energy that travels in waves. Some sounds are pleasant to hear, but others can harm human health, endanger workers, or contribute to structural fatigue. Undesirable sounds, or noise, have characteristics that designers of acoustic insulation need to understand. Without this knowledge, noise problems can cause design-related headaches.

In Part 1 of this series from Elasto Proxy, you’ll learn about the consequences of noise and discover why its characteristics might not be what you think. You’ll also consider why decibel-level differences in noise sources matter. Then, in Part 2, we’ll examine sound measurements and noise control in greater detail. Along the way, we invite you to contact us with your questions about acoustic insulation. (more…)

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