Specialty Plastics Inc. is a custom plastic injection molder located in St. Peters, MO. Our core competency is tight tolerance plastic parts. For over 40 years, we have supplied high quality injection molded products and services to a wide array of business: medical instruments, automotive, healthcare, home appliances, sporting goods, electrical and many more. Injection molding is our specialty.

At Specialty Plastics, we consider business a partnership with our customers. We cannot continue to grow unless our customers do so. Let us show you the benefits you’ll gain with a partnership with us.