Business Details
Precision Plastic Injection Molding Solutions for Medical & Industrial Applications
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. Our investment in Mantle's Automated Toolmaking System enables rapid production of high-quality mold components, ensuring we deliver innovative solutions tailored to client needs.
Services
Plastic Injection Molding
Low-Volume Injection Molding
Post Molding Operations
Mold Designing & Tooling
Clean Room Molding
Highlights and features
- 40+ years of experience in precision plastic injection molding.
- ISO 13485 and ISO 9001 certified for quality assurance.
- In-house tool design and rapid tooling capabilities.
- 25,000+ sq ft of ISO Class 7 & 8 cleanroom facilities.
- Vertical integration for cost efficiency and faster delivery.
Associations and certifications
- ISO 13485
- ISO 9001
- NADCAP Certified
- ITAR Registered
- FDA Certified
Services
Plastic Injection Molding
Our plastic injection molding service processes over 700 thermoplastic and liquid silicone rubber (LSR) materials. We support low-to-mid volume production, offering DFM assistance, mold design, and precision part manufacturing. Clients benefit from rapid prototyping, cleanroom capabilities, and compliance with ISO and FDA standards for medical and aerospace applications.
Low-Volume Injection Molding
Specializing in batches of 10010,000 pieces, our low-volume injection molding serves startups and OEMs. This service includes rapid tooling, cost-effective production, and flexibility for design iterations. Clients gain faster time-to-market and reduced risk through our in-house engineering and vertical integration.
Clean Room Molding
We provide ISO Class 7 & 8 cleanroom facilities for medical and regulated industries. This service includes molding, assembly, and packaging of contamination-sensitive parts. Features FDA-certified processes, validation support, and specialized packaging to ensure compliance and product integrity for critical applications.
Mold Designing & Tooling
Our mold designing and tooling service creates Class 101105 molds using aluminum, steel, or hybrid materials. Engineers optimize materials based on resin type, shot volume, and tolerances. Rapid tooling via Mantle's Automated System accelerates production of high-precision cores and cavities for complex parts.
Post Molding Operations
We offer heat staking, sonic welding, CNC machining, painting, assembly, and packaging. These operations streamline production by consolidating processes under one roof. Clients receive fully finished products with reduced lead times and enhanced quality control through our integrated workflow.
Questions
What industries does Seaway Plastics serve?
We specialize in medical, aerospace, defense, and precision industrial applications, providing injection molding and cleanroom manufacturing tailored to regulated industries.
Are you ISO certified?
Yes, we hold ISO 13485 and ISO 9001 certifications, ensuring quality management systems for medical and general industrial manufacturing processes.
Do you offer low-volume production?
Yes, we support low-to-mid volume injection molding (100–10,000 pieces) with rapid tooling and flexible production schedules for startups and OEMs.
What post-molding services are available?
We provide heat staking, sonic welding, CNC machining, painting, assembly, packaging, and shielding to deliver fully finished products.
Do you have cleanroom capabilities?
Yes, we operate 25,000+ sq ft of ISO Class 7 & 8 cleanrooms for FDA-certified molding, assembly, and packaging of contamination-sensitive parts.
Where are your facilities located?
We have facilities in Port Richey, FL; Brooksville, FL; Santa Rosa, CA; and St. Paul, MN, supporting nationwide client needs.
