About Us

ST. LOUIS, MISSOURI

Expert Service

Since 1971, Seiler Plastics Corporation has established itself as one of the leading custom plastic extrusion and custom injection mold companies in the United States. We take great pride in our ability to innovate and continually meet our customer's design challenges while providing the highest quality products.

Our seasoned engineering and manufacturing teams are experienced in the design and production of all types of products including:

Extruded Plastic Profiles

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Extruded Plastic Tubing

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Extruded Plastic Sheet

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Injection Molding

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