Transforming ideas into reality, one solution at a time.
Geonautics Manufacturing, Inc. (GMI) is a small engineering-oriented company specializing in the development and production of reinforced plastic composites for technical applications. Based in Newburyport, Massachusetts, we have over 50 years of experience in engineering innovative and high-performance materials for a diverse range of industries.
Our Capabilities
Our portfolio of services includes:
Custom Moldings
We offer a comprehensive range of custom molding services using various techniques, including:
- Filament winding (tubular and spherical)
- Vacuum bag molding
- Compression molding
- Injection molding
Material Expertise
We possess extensive knowledge and expertise in working with diverse materials such as:
- Thermoplastics
- Thermosets
- Reinforced plastics
- Carbon fiber composites
- Advanced materials for specialized applications
Engineering Services
Our team of skilled engineers can assist you with:
- Material selection and optimization
- Design analysis and development
- Prototyping and testing
- Production engineering and process optimization
A History of Innovation
Since our inception in 1963, GMI has been involved in numerous projects that pushed the boundaries of innovation. We have:
- Developed and produced rocket nozzles for various missiles.
- Designed and fabricated navigational buoys for the US Coast Guard.
- Developed large ground-based radomes for both military and commercial applications.
- Developed the PASGT Ballistic Helmets for the US Army.
- Produced custom moldings for leading wing tips for fighter aircraft and other specialized applications.
Collaboration and Customer Focus
At GMI, we believe in building strong partnerships with our customers. We are committed to:
- Collaboration: Working with you every step of the way to understand your needs and objectives.
- Partnership: Sharing our expertise and working collaboratively to find optimal solutions.
- Teamwork: Leveraging our diverse skills and knowledge to deliver exceptional results.

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