How to Install Bulb Trim Seals

Bulb trim seals keep out air, water, dust, and noise. They are used in doors with radiused corners and consist of a compressible bulb and a solid retainer section. When the door is closed, the bulb is compressed to create a seal between the door and the jam. The trim or solid retainer section installs over the edge of the door and combines a finished appearance with edge protection. Applications for bulb trim seals include mobile equipment and enclosures for electronics and machinery.

In this “How to” article from Elasto Proxy, you’ll learn how to install bulb trim seals so that they won’t over-compress or kink. First, you’ll learn about materials and measurements for the bulb section. You’ll then learn how to specify the trim section of your seal. Along the way, we’ll cover some calculations and best practices for ordering and installing the industrial rubber products that you need. Bulb trim seals are sold in coils, but they also come cut-to-length to help you speed installation.

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Seal Rounded Corners by Starting with These Three Measurements

Seal Rounded Corners with Bulb Trim Seals Do you need to seal rounded corners against wind, water, dust, or dirt? Bulb trim seals are industrial rubber products that provide sealing and insulation for machine doors, vehicle hatches, and equipment enclosures. They’re designed to seal rounded corners and have separate bulb and retainer sections. Each of these sections can use a different material and have a different durometer or hardness.

With bulb trim, the bulb section compresses to form a seal when the door, hatch, or enclosure is closed. The trim or retainer section attaches to a flange or substrate. To choose bulb trim for your application, you need to specify the bulb size, bend radius, and flange thickness. By choosing the right bulb size, you can avoid over-compression. The right bend radius and flange thickness help to avoid kinking and leakage. (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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