Seaway Plastics Engineering is a U.S.-based contract manufacturer specializing in precision plastic injection molding, tooling, engineering, and complex assembly solutions. Founded in 1973, the company has developed extensive experience serving highly regulated industries where quality, consistency, and technical precision are critical. Seaway provides comprehensive manufacturing support from product development, DFM engineering, prototyping, and mold design through injection molding, assembly, validation, packaging, and distribution. Its capabilities include thermoplastic and liquid silicone rubber molding, insert molding, overmolding, cleanroom molding, CNC machining, ultrasonic welding, heat staking, painting, laser marking, and other post-molding operations. The company serves medical, aerospace and defense, consumer products, and precision industrial markets. Its facilities provide ISO Class 7 and Class 8 cleanroom capabilities and ISO 13485-certified operations to support demanding applications. With experienced engineering teams, in-house tooling, multi-site manufacturing, and integrated post-production services, Seaway Plastics positions itself as a strategic manufacturing partner capable of supporting customers from concept and prototype through production and finished assemblies.