Struggling to find the right injection molding manufacturer for your next big project? With so many factories claiming top-notch quality and fast turnarounds, it’s easy to feel overwhelmed by the options. Choosing the right supplier can make or break your product—affecting everything from production costs to reliability. That’s why it’s vital to know which manufacturers truly deliver on their promises. Imagine partnering with an industry-leading factory that ensures outstanding quality, on-time delivery, and peace of mind.
Ready to discover the best options? Read on to find out which injection molding manufacturers stand above the rest!
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(2025) Top 12 Injection Molding Companies in the USA
EVCO Plastics | Manufacturing & Injection Molding Company
Product Details:
EVCO Plastics specializes in plastic injection molding and related manufacturing services, offering expertise in large parts, medical & healthcare products, plastic and thin wall packaging, consumer goods, and industrial products. Their services include engineering solutions, prototyping, tooling and mold building, and a variety of advanced molding capabilities such as overmolding, multi-shot molding, and liquid silicone rubber injection molding.
Technical Parameters:
– Plastic injection molding (including gas assist, overmolding, insert molding,
– Liquid Silicone Rubber (LSR) injection molding
– In-mold decorating and labeling, molded-in color, and UV coating
– Advanced secondary operations (metrology, robotics, automation)
Application Scenarios:
– Medical and healthcare device manufacturing
– Consumer product and electronics component production
– Plastic packaging (including thin wall and returnable packaging)
– Industrial product manufacturing and metal-to-plastic conversion
Pros:
– Comprehensive range of injection molding and engineering services
– Expertise in producing large and complex plastic parts
– Advanced automation, measurement, and quality control capabilities
– Ability to support prototyping and early supplier involvement for optimized
Cons:
– Limited technical specifications or data points provided directly on the main
– Details on maximum part size, material compatibility, and production volume
top 10 injection molding companies in the USA – PLAS.CO
Product Details:
Custom injection molding services with a focus on product design, prototyping, and both low- and high-volume production runs. Expertise in tight-tolerance molding and complex projects for industries including medical, automotive, and aerospace.
Technical Parameters:
– ISO 13485 and ISO 9001 certified
– Over 200,000 sq ft of manufacturing space
– Tight-tolerance injection molding
– Rapid tooling and prototyping capabilities
Application Scenarios:
– Medical device components
– Automotive parts
– Aerospace components
Pros:
– Specializes in medical expertise and regulatory compliance
– Advanced and rapid prototyping capabilities for quick turnaround
– High precision and consistent results in tight-tolerance parts
– Flexibility for both small-batch and large-scale production
Custom Injection Molding | Pioneer Plastics
Product Details:
Custom injection molding services focused on quality American-made plastic products, including display cases, containers, grids, and household plastic items. Emphasis on custom-designed plastic solutions for various industries and applications.
Application Scenarios:
– Display and protection of collectibles such as diecast cars, sports memorabilia
– Packaging solutions for candy, nuts, honeycomb, and lab supplies
– Household item components such as cord grips, caster wheels, and putty knives
– Storage and organizational solutions like scrapbook storage cases
Pros:
– Veteran-owned business with American-made products
– Ability to provide custom-designed solutions for specific customer requirements
– Wide range of applications and product categories offered
– Focus on quality craftsmanship and product durability
Cons:
– Technical specifications and exact material options for injection molding are
– Potentially limited information on minimum order quantities or prototyping
Top 100 Injection Molding Companies in the USA – MFG Shop
Product Details:
Injection molding services for precision plastic parts production, including rapid prototyping, custom mold design, and high-volume manufacturing. Offerings span engineering-grade thermoplastics, specialty polymers, and comprehensive quality control with certifications for medical, automotive, and industrial applications.
Technical Parameters:
– Tolerances as tight as ±0.001 inches for medical and defense parts; typical
– Supports a wide range of thermoplastics (e.g., ABS, PEEK, Nylon, Polypropylene)
– Automated quality control systems and inspection; ISO 13485:2016, ISO 9001:2015
– Rapid prototyping and production turnaround with technology-driven processes
Application Scenarios:
– Medical devices (including Class I, II, and III components)
– Automotive parts and assemblies
– Electronics housings and components
– Industrial and consumer goods manufacturing
Pros:
– High precision and consistency in part production, supported by automated
– Broad material versatility, enabling application across diverse sectors
– Fast turnaround times with rapid prototyping capabilities
– Certified facilities ensure compliance with strict industry standards
Cons:
– High initial costs for mold design and tooling
– Design constraints related to wall thickness, material flow, and cooling times
Injection Mold Design and Manufacturing | Xcentric
Product Details:
Xcentric (a Quickparts Company) specializes in injection mold design and manufacturing, offering services such as plastic injection molding for prototyping, bridge, and production needs. They also provide CNC machining, mold making, and 3D printing services, supporting a broad range of industries with a complete manufacturing portfolio for rapid prototyping and scaled production.
Technical Parameters:
– Rapid prototyping and short production cycles through advanced manufacturing
– In-house, U.S.-based quick-turnaround production facilities
– Capabilities in injection molding, CNC machining, and multiple additive
– Extensive material selection including stock polymers and CNC materials
Application Scenarios:
– Medical equipment manufacturing with design flexibility and cost savings
– Aerospace components requiring accelerated evaluation and pre-production testing
– Consumer and industrial products demanding custom designs and agile volume
– Automotive and defense industries needing rapid prototyping and short-run
Pros:
– Complete, in-house, end-to-end manufacturing solutions from prototype to
– Rapid lead times and quick-turnaround for both prototyping and production parts
– Expertise across multiple manufacturing technologies (injection molding, CNC
– Adaptable to a variety of industries and complex technical requirements
Cons:
– No explicit mention of high-volume, commodity-scale production capabilities
– Specific technical limitations or tolerances are not described in detail
USA Plastic Injection Molder | Crescent Industries
Product Details:
Crescent Industries specializes in plastic injection molding services, including custom injection molding, insert molding, over molding, injection mold design, tooling, tool transfer, kitting & assembly, and plastic part decoration. They serve industries such as medical devices, military applications, and industrial/OEM markets.
Technical Parameters:
– Provides plastic injection molding with design and tooling capabilities
– Offers insert molding and over molding capabilities
– Includes post-processing services like kitting, assembly, and plastic part
– Utilizes injection molding automation and quality systems
Application Scenarios:
– Medical device manufacturing requiring precision-molded plastic components
– Military equipment and parts needing durable plastic solutions
– Industrial and OEM products that involve custom plastic parts and assemblies
Pros:
– Full-service solutions from design to assembly and decoration
– Expertise in regulated sectors like medical and military applications
– Custom injection molding options including advanced techniques like insert and
Cons:
– Specific technical capabilities, certifications, or material compatibilities
– May not be suited for non-industrial or non-medical product sectors
Plastic Injection Molding – Full-Service Custom Molding
Product Details:
Universal Plastic Mold (UPM) provides full-service plastic injection molding including large part and high tonnage custom molding, program management, assembly, packaging, logistics, warehousing, and distribution. UPM is a one-stop facility offering turnkey manufacturing solutions for businesses of all sizes, supported by 24/7/365 operations and over 300 employees.
Technical Parameters:
– Injection molding machines ranging from 240 tons to 2,000 tons clamp force
– ISO 9001:2015 certified and ISO/TS 16949 compliant quality management system
– Just-in-time (JIT) inventory strategies and on-site warehousing
– Ability to handle both low and high volume production, including large parts
Application Scenarios:
– Manufacturing plastic components for diverse industries, including automotive
– Production of large or custom plastic parts for commercial products
– Prototype development for new product launches
– End-to-end supply chain support including assembly and distribution
Pros:
– One-stop turnkey solution covering manufacturing, assembly, packaging,
– Highly scalable capacity suitable for both small and high-volume orders
– Certified quality management ensuring high product standards and compliance
– Reduces time-to-market and logistical overhead for clients
Cons:
– Plastic injection molding may not be suitable for small runs with complex,
– Primarily serves businesses with significant manufacturing or distribution
Custom Plastic Injection Molding Company | Molded Devices, Inc.
Product Details:
Molded Devices, Inc. specializes in custom plastic injection molding and related manufacturing services. Their offerings include medical devices (cuffs, balloons, catheters, cannulas, tubing, pumps), industrial components (micro-metering pumps, motors, gears), and plastic parts for aerospace, defense, energy, and other sectors. They also provide engineering, tooling, extrusion, dip molding, blow molding, assembly, and secondary operations including clean room assembly and ultrasonic welding.
Technical Parameters:
– Injection molding capabilities with options for clean room molding, insert,
– Tube extrusion options include multi-lumen, corrugated, expandable, and smooth
– Dip molding, dip coating, and spray coating services for custom finishes
– Medical device manufacturing supported by clean room facilities and sterile
Application Scenarios:
– Manufacture of single-use and reusable medical devices for healthcare providers
– Production of custom industrial equipment parts, such as pumps and plastic gears
– Aerospace and defense components requiring precise plastic molding
– Bespoke plastic parts for the food & beverage, financial, HVAC, and automotive
Pros:
– Comprehensive range of manufacturing services from design to assembly
– Expertise in medical-grade molding and clean room manufacturing
– Custom engineering and product development support
– Multiple facility locations across North America for flexible production
Cons:
– No detailed technical specs (e.g., tolerances, material data) provided
– Potentially longer lead times due to custom nature of services
– Lack of visible instant online quoting or e-commerce options
Custom Injection Molding Manufacturer | Nicolet Plastics | Injection …
Product Details:
Nicolet Plastics specializes in custom plastic injection molding, offering services ranging from low- to high-volume production for various industries, complemented by engineering support, value-added assembly operations, and advanced additive manufacturing (3D printing) in both plastic and metal.
Technical Parameters:
– Injection molding equipment capability from 30 to 600 tons
– Specialized automated insert molding cells for dedicated production
– Tight tolerance and micro molding capabilities
– Additive manufacturing: Carbon 3D plastic printing and Mantle 3D metal printing
Application Scenarios:
– Industrial components
– Medical devices
– Marine and aerospace parts
– Consumer product manufacturing
Pros:
– Supports low- to high-volume production with flexibility
– Wide material and process versatility, including plastic and metal 3D printing
– Strong engineering and product support from concept to final product
– Value-added post-molding operations such as assembly, CNC machining, and welding
Cons:
– High tooling costs can be a barrier, especially for smaller runs
– Challenges include material selection, process optimization, and mold wear
Comparison Table
| Company | Product Details | Pros | Cons | Website |
|---|---|---|---|---|
| (2025) Top 12 Injection Molding Companies in the USA | siliconemakers.com | |||
| EVCO Plastics | Manufacturing & Injection Molding Company | EVCO Plastics specializes in plastic injection molding and related | Comprehensive range of injection molding and engineering services Expertise in | Limited technical specifications or data points provided directly on the main |
| top 10 injection molding companies in the USA – PLAS.CO | Custom injection molding services with a focus on product design, prototyping, | Specializes in medical expertise and regulatory compliance Advanced and rapid | plas.co | |
| Custom Injection Molding | Pioneer Plastics | Custom injection molding services focused on quality American-made plastic | Veteran-owned business with American-made products Ability to provide | Technical specifications and exact material options for injection molding are |
| Top 100 Injection Molding Companies in the USA – MFG Shop | Injection molding services for precision plastic parts production, including | High precision and consistency in part production, supported by automated | High initial costs for mold design and tooling Design constraints related to | shop.machinemfg.com |
| Injection Mold Design and Manufacturing | Xcentric | Xcentric (a Quickparts Company) specializes in injection mold design and | Complete, in-house, end-to-end manufacturing solutions from prototype to | No explicit mention of high-volume, commodity-scale production capabilities Spec |
| USA Plastic Injection Molder | Crescent Industries | Crescent Industries specializes in plastic injection molding services, | Full-service solutions from design to assembly and decoration Expertise in | Specific technical capabilities, certifications, or material compatibilities |
| Plastic Injection Molding – Full-Service Custom Molding | Universal Plastic Mold (UPM) provides full-service plastic injection molding | One-stop turnkey solution covering manufacturing, assembly, packaging, | Plastic injection molding may not be suitable for small runs with complex, | www.upminc.com |
| Custom Plastic Injection Molding Company | Molded Devices, Inc. | Molded Devices, Inc. specializes in custom plastic injection molding and | Comprehensive range of manufacturing services from design to assembly Expertise | No detailed technical specs (e.g., tolerances, material data) provided Potential |
| Custom Injection Molding Manufacturer | Nicolet Plastics | Injection … | Nicolet Plastics specializes in custom plastic injection molding, offering | Supports low- to high-volume production with flexibility Wide material and |
Frequently Asked Questions (FAQs)
How do I find reliable injection molding manufacturers?
Start by researching online directories, trade shows, and industry forums. Check company reviews, client testimonials, and request references. Visiting the factory or arranging a video call can give you a better sense of their capabilities and professionalism.
What qualifications should I look for in a manufacturer?
Look for certifications like ISO 9001 for quality management, relevant production experience in your industry, and evidence of robust quality control systems. Skilled technical staff and up-to-date machinery are also important indicators of a competent manufacturer.
How can I compare pricing between manufacturers?
Request detailed quotes from multiple suppliers, ensuring you provide the same specifications and order quantity. Compare not just the unit price, but also tooling costs, lead times, material types, and after-sales support to get a clear picture of overall value.
What information do manufacturers need to provide an accurate quote?
Manufacturers typically need 2D/3D CAD drawings, material preferences, desired production volume, color requirements, tolerance details, and any special features. The more detailed your information, the more accurate and relevant the quote will be.
Why is it important to consider location when choosing a factory?
Factory location affects shipping costs, lead times, and ease of communication. Local suppliers might offer faster turnaround and easier on-site visits, while overseas factories can provide cost savings, but may have longer lead times and require more coordination.