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rubber extrusions

  • Extruded Rubber Profiles for Custom Seals and Gaskets

    Video - Extruded Rubber Profiles Click to Watch the Video

    Learn how extruded rubber profiles are made, and how custom fabrication converts elastomeric stock materials into specialty seals and custom gaskets. Click here for Elasto Proxy's catalog of standard profiles.

    Rubber extrusion is a manufacturing process that creates stock materials or profiles with a fixed cross-section such as a U-shaped channel. First, uncured elastomers are pushed or drawn through a specialized metal tool called a die. Later, the rubber compound is cured through vulcanization, a chemical conversion process that uses heat and sulfur to impart durability and improve mechanical properties.

    Rubber extrusion is used with many different types of elastomers, and this rubber manufacturing method supports complex cross-sectional profiles with an excellent surface finish. Because extrusion mixes and blends the raw materials, the cured rubber offers consistent strength and a uniform appearance along the length of the profile. Standards from the Rubber Manufacturers Association (RMA) define part tolerances based on physical dimensions and an RMA class of high precision, precision, or commercial. Continue reading

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