Seiler Plastics
- Location
- St. Louis, MO, United States / US
- Founded
- 1971
- Primary Activity
- Thermoforming: Plastic sheet & film
Custom plastic sheet extrusion company producing HDPE, ABS, PVC, polypropylene, polystyrene and other sheet materials. Seiler supports thermoforming, fabrication and industrial customers with custom gauge, width, color and material requirements and secondary converting capabilities.









