Seaway Plastics Engineering Acquires Wright Engineered Plastics

MINNETONKA, MN (January 20, 2021) – Seaway Plastics Engineering (“Seaway”), a portfolio company of Tonka Bay Equity Partners (“Tonka Bay”), has announced the acquisition of Wright Engineered Plastics (“Wright”) on December 31, 2020.  The acquisition strengthens Seaway’s position as a supplier to the medical industry while expanding into the California market.

Based in Santa Rosa, CA, Wright is an FDA registered and ISO 13485-certified organization with extensive experience in precision injection molding. Wright’s capabilities include two-shot molding, insert molding and over-molding of precision components, in addition to contract manufacturing for the medical industry by utilizing its clean room capabilities.

“We’re excited to acquire Wright, as this will enable us to broaden our capabilities and geographic reach to provide full-service injection molding services to an expanded customer base,” says Tom Orr, President and CEO of Seaway.

“Wright has a long-standing reputation for quality and service within their customer base,” said Kam Kielhorn, Principal at Tonka Bay. “Leveraging Seaway’s sales network and Wright’s capabilities, we’ll be able to further expand and serve medical and other high reliability end-markets.”

About Seaway Plastics Engineering

Florida-based Seaway is a market leader in complete solutions for complex injection molding projects. Seaway serves OEMs, high-growth companies, and contract manufacturers for the medical, defense, aerospace, and high-precision industrial markets.  With the acquisition of Wright Engineered Plastics, the combined companies will have more than 50 injection molding machines for small to large-part production, clean-room molding at two locations, secondary operations, clean-room assembly, painting and finishing services.  For more information, visit

About Wright Engineered Plastics

Founded in 1968, Wright’s value proposition is centered on a diverse offering of services including simple to complex assemblies, two shot molding and over-molding.  In addition to medical, Wright has customers in the defense and precision industrial end markets.  The company is based in Santa Rosa, California. For more information visit,

About Tonka Bay Equity Partners
Based in Minnetonka, Minnesota, Tonka Bay has been Building Bigger, Better Businesses® for over 25 years. Tonka Bay Equity Partners is a private equity firm that acquires and invests in growth-oriented businesses in the highly engineered manufacturing, business services and value-added distribution sectors. For more information, call (952) 345-2030 or visit

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