Low to High Volume Plastic Injection Molding

At Seaway Plastics, we specialize in high-quality, plastic injection parts and mold tools. Whether you need 50 units or 100,000+, we have the experience and capability to produce and deliver your parts on-time and on-budget,
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Providing Custom Plastic Injection Molding Services for Over 40 Years

Seaway Plastics Engineering’s roots go back to the early 1970s in the Detroit-metro area, where we were recognized as a pioneer in the quick-turnaround, prototype injection molding and low-volume production industry. Today, our company is located in the Tampa Bay area, with manufacturing locations in Port Richey and Brooksville, Florida - the result of our 2012 expansion.

Our two facilities occupy approximately 90,000 square feet, where we provide customers with end-to-end injection molded plastics, 3-D printing, and a range of specialty services. This footprint has allowed us to expand our production capacity into the mid to high volume injection molding market while maintaining the quality and commitment to expert customer service and turn around time that Seaway Plastics has always been known for.

Seaway Plastics is ISO 9001-2015 and 13485-2016 certified, and follows IQ, OQ, PQ quality standards. We also follow the standard production part approval process (PPAP), are ITAR compliant, and Nadcap accredited on quality and chemical processing.

At Seaway Plastics we pride ourselves on being the best possible company at meeting our customers’ needs for high-quality tooling and injection molding for your low to high volume production needs.

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What Our Customers are Saying


"I have to say, you are so easy to work with, so fixing any problem or expediting product is always such a breeze. I know I can always count on you getting done what needs to be done."

Medical Device Manufacturer


“I reviewed the parts dropped off today. They look beautiful, and I wanted to thank you and your team for beating your normal turnaround time. I’m sure the customer will be very happy with the parts, especially because they’re early too!! Thanks again for all your support."

Contract Manufacturer


“Thank you again for the quality parts and the prompt turnaround. It is a breath of fresh air to deal with a supplier who delivers what they say they will when they say they will.”

Lab Equipment Manufacturer


"Seaway Plastics Engineering plays a key role in providing us with materials, components, and/or services required to manufacture and distribute our products to support the medical equipment industry and other critical infrastructure products.  The sustainability of our collective supply chain is one of the keys to beating this virus and sustaining our economic freedoms."

Seaway Plastics Customer

Get in Touch!

Call (727) 845-3235 or send us a message using the form below.