Seaway Plastics Engineering

At Seaway Plastics Engineering, we specialize in plastic injection molding for low to high-volume projects. With over 40 years of experience, we manufacture precision parts and complex assemblies for highly regulated industries, including medical, aerospace, and defense. As an ISO 13485-certified molder, we offer medical, cleanroom, and industrial injection molding with expertise in over 700 thermoplastics and liquid silicone rubber (LSR). Our full turn-key solutions include DFM, engineering, in-house tool design, injection molding, assembly, kitting, packaging, and distribution. We also provide value-added operations like pad printing, welding, and shielding. Our vertical integration drives efficiency, cost savings, reduced risk, and faster time to market. With facilities in Port Richey, FL; Brooksville, FL; Santa Rosa, CA; and two in St. Paul, MN, we scale to support complex projects. With 25,000+ square feet of ISO Class 7 & 8 cleanrooms, we offer FDA-certified molding, assembly, validation, and specialized packaging for advanced medical products. At Seaway, we bring engineering expertise, world-class technologies, and a commitment to excellence. Let’s build your next injection molding solution.