Precise elastomer molded parts for your requirements

What are molded elastomer parts?

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Molded elastomer parts are components made from elastic materials characterized by high flexibility, resilience, and durability. They are shaped into the desired geometry using processes such as casting and injection molding and can be precisely tailored to specific requirements.

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Typical materials include polyurethane (PU) and thermoplastic elastomers (TPE), as they offer an ideal combination of elasticity, wear resistance, and chemical stability. Targeted material selection allows for the precise adjustment of properties such as hardness, damping, tear strength, and resistance to environmental factors. Molded elastomer parts are primarily used in applications where components must withstand dynamic loads, abrasion, or aggressive media. They are particularly well-suited for technical components such as seals, damping elements, rollers, coatings, or protective parts, and they make a decisive contribution to the functionality and longevity of industrial systems.

What shapes are available for plastic molded parts?

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Plastic molded parts can be realized in almost any geometry – from simple standard shapes to highly complex, function-integrated components. The design depends significantly on the material used and the chosen manufacturing process.

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Simple geometries

Typical standard shapes include simple components such as plates, covers, housings, rings, bushings, rollers, or seals. These geometries are relatively straightforward to manufacture and are frequently produced in large quantities. They are used wherever standardized components are required.

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Complex molded parts and special geometries

Furthermore, complex molded parts with integrated functions can be realized, such as components with undercuts, varying wall thicknesses, or special surface textures. Such customized solutions are specifically developed for demanding applications to combine multiple functions into a single component or to reduce assembly effort.

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Overview of manufacturing processes

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Casting

In the casting process, liquid reaction systems, such as polyurethane, are poured into a mold where they harden. This method is particularly suitable for large, complex, or custom-made components as well as smaller production runs.

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Injection molding

In the injection molding process, plastic material is melted and injected into a mold under high pressure. This method enables highly precise, series-ready production with high repeatability – ideal for large quantities and complex geometries.

Tolerances and acceptance conditions for plastic molded parts

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The production of plastic molded parts is subject to defined tolerances that vary depending on the material, component geometry, and manufacturing process. For elastomers in particular, adapted tolerance ranges are required due to material-specific properties such as shrinkage or elastic behavior. The basis for this includes common standards such as DIN ISO 3302 for elastomers, as well as material- and process-specific guidelines.

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Acceptance conditions are generally determined individually between the manufacturer and the customer and include not only dimensional tolerances but also criteria such as surface quality, hardness (e.g., Shore value), mechanical properties, and visual characteristics. Depending on the application, testing requirements, documentation, or initial sample inspection reports may also be part of the acceptance process. INTERNORM relies on consistent quality assurance throughout the entire manufacturing process. Modern measuring and testing technology ensures that all specified requirements are met and that the supplied plastic molded parts comply with the highest quality standards.

Plastic molded parts for the highest demands

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Plastic molded parts are custom-manufactured components made from materials such as polyurethane (PU), TPE, or TPU, which are characterized by high load-bearing capacity, wear resistance, and flexible properties

distinguish them. They are available in numerous variants—from simple standard shapes to complex special geometries—and are produced using processes such as casting or injection molding, depending on the requirements.

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The ability to precisely tailor material properties and geometries to specific applications makes plastic molded parts indispensable for demanding industrial use. They contribute significantly to the functionality, efficiency, and service life of machines and systems.

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INTERNORM is your development partner for custom plastic components, providing precise implementation of individual solutions based on customer requirements, targeted use of high-quality materials, and consistent quality assurance.