Plastic Fabrication & Assembly

Hart engineers and manufactures plastic components for demanding medical applications. From standalone parts to complex assemblies, we design around your device's functional requirements, sterilization method, and clinical use, optimizing for both performance and manufacturability.

Engineering Plastics for Real-World Medical Demands

Hart selects and processes plastics based on how they will behave in use, not just how they look on paper. We consider mechanical strength, chemical exposure, sterilization compatibility, and ergonomic requirements to build components that support safe, reliable operation in the field.

Insert-Molded Solutions Tailored to Your Build

We combine metal and plastic features through precise insert molding that supports durability, repeatability, and consistent alignment. Our molding strategies reduce multi-step assembly costs, minimize weak points, and create reliable bonds between dissimilar materials.

Standard or Custom Molds Built to Your Requirements

Whether you need a unique mold or can leverage an existing design, Hart manufactures plastic components using tooling options that balance budget, speed, and scalability. We support rapid prototyping, low-volume test runs, and optimized commercial tooling for sustained production.

Need a Plastic Component That Must Perform Within a Larger System? Take It to Hart.

Plastic parts rarely function alone—they interact with metal components, fluids, adhesives, coatings, and end-user movement. Hart’s engineers evaluate every requirement early in the design process and shape the part to fit the complete device system. We help you avoid downstream challenges like bonding failures, poor ergonomics, assembly bottlenecks, excessive wear, or problems introduced by sterilization. The result is a part that works exactly as intended, not just on the drawing board.
100% Engineered and Manufactured in the US
Founder-owned and operated since 1976
FDA Registered & ISO 13485 Certified

Our Core Custom Capabilities

Hart offers end-to-end plastic fabrication and assembly solutions, including molding, swaging, bonding, insert molding, cleaning, packaging, and sterilization support. We manage plastic and metal features under one roof to ensure dimensional consistency and secure interfaces.
Engineered Plastic Options

Engineered Plastic Options to Match Your Mechanical & Clinical Requirements

We help you select the best resin for strength, flexibility, lubricity, and sterilization response. From rigid medical-grade components to flexible cannula interfaces, we design with the clinical environment in mind—ensuring predictable behavior in demanding use cases.

Multi-Part Plastic Assemblies & Complex Builds

Hart engineers and assembles multi-component systems that combine molded plastics, tubing, metal elements, coatings, and ergonomic features. Our integrated production approach ensures alignment, bonding reliability, and strong inter-component performance across repeated production cycles.

Identification, Marking & Enhancements

We integrate functional and aesthetic enhancements such as color coding, textured grip features, branding marks, measurement indicators, and radiopaque or biocompatible additives. These details improve usability, support regulatory compliance, and reduce clinical error.

Case Studies

Explore how Hart’s engineering expertise has helped medical device manufacturers overcome unique design and manufacturing challenges. Each case study highlights our problem-solving approach and the measurable impact for our partners.

How One Medical Device Program Became a Long-Term Manufacturing Partnership

For complex medical devices, there are frequently multiple opportunities for improvement. Materials, assembly methods, packaging, and production flow all contribute to the ultimate success or failure of a complex device. When one thing goes wrong, it affects everything else down the line.
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Optimization and Partnership for Reliable Endoscopic Needles

Hart partners with OEMs to design and build complete medical components and assemblies. Our integrated process combines engineering insight with full-scale production efficiency.
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Scalable, Flexible Approaches to Custom Ophthalmic Surgical Devices

We design and manufacture precision needles for specialized medical applications. Hart engineers to meet exact performance needs through collaboration, quality, and decades of expertise.
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Talk to Our Engineers

Our engineers are ready to collaborate with you on your next product. Whether you’re refining an existing design or developing a new device, Hart’s deep manufacturing experience ensures faster timelines, lower costs, and uncompromising quality.

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