Top Mold Suppliers in the U.S.A.

Nearly every plastic or rubber component in daily life began as a cavity cut into a steel or aluminum mold. Industrial mold manufacturing is one of the most foundational yet least visible segments of American manufacturing, providing the tooling that makes mass production possible across virtually every consumer and industrial sector. Without precision molds, the production lines that define modern manufacturing would simply stop.

The U.S. mold industry is a mature but evolving sector, shaped by growing demand for tighter tolerances, more complex part geometries, and faster tooling cycles. This article examines the current state of the industry using data collected directly from U.S. mold suppliers, explores the key trends driving the sector in 2026, and highlights the largest companies and top suppliers serving the market today.

Key Facts on U.S. Mold Suppliers

MNI, compiler and publisher of industrial business profiles for the U.S. industrial sector and the informational engine behind IndustryNet, the industrial marketplace and IndustrySelect, the industrial database, surveyed the nation's mold suppliers, directly collecting key data points on this essential industry. Here are some key facts to know about the industry based on this data: 

• There are nearly 700 mold suppliers operating in the United States.
• Those companies collectively employ more than 17,000 workers nationwide.
• Average reported sales for U.S. mold suppliers stand at approximately $5 million.
• Roughly 27% of suppliers distribute their products internationally.
• 10% of suppliers import raw materials from outside the United States.
• The average mold supplier operates out of approximately 22,900 square feet of facility space.
• The average U.S. mold company has been in business for 42 years, with a median founding year of 1985, reflecting a sector built on deep technical expertise and long-standing customer relationships.
• 14.6% of mold suppliers hold ISO or related quality certifications.
• Women-owned businesses represent 2.3% of the sector; minority-owned businesses represent 0.8%.
• The Midwest dominates the industry's geographic footprint, accounting for more than 52% of all suppliers. The Northeast follows at 20%, with the West and South each at roughly 14%.
• Michigan alone is home to 86 suppliers, the most of any state, followed by Ohio (65), Illinois (51), California (48), and Indiana (44).

What Mold Suppliers Do

Industrial mold manufacturers design and build the tooling used to shape molten or pliable materials into finished parts. The mold itself is the master template: it determines the geometry, surface finish, and dimensional accuracy of every part produced from it, sometimes across millions of production cycles.

The most common type is the plastic injection mold, which accepts molten thermoplastic under pressure and forms it into a precise shape as it cools. But the industry also produces blow molds for hollow containers, compression molds for rubber and composite parts, thermoforming molds for sheet plastic, rotational molds for large hollow products, and die-cast dies for metal parts. Some suppliers specialize in a single mold type; others support a broad range of forming processes under one roof.

Core capabilities within the industry typically include CNC milling and turning, wire and sinker EDM, mold design and engineering, prototype tooling, and mold repair and revision services. Many suppliers also offer value-added services such as injection molding production, assembly, and quality inspection, allowing customers to source finished components rather than just tooling.

The industries served are wide-ranging. Automotive is the largest customer base, followed by medical devices, consumer products, packaging, aerospace, electronics, and industrial equipment. The shift toward lightweight materials in vehicles, growth in single-use medical components, and continued demand for complex packaging geometries are all keeping mold shops busy across the country.

Largest Mold Companies in the U.S.

The following companies represent the largest mold suppliers in the United States by workforce size. Their scale reflects decades of investment in equipment, engineering talent, and customer relationships across a range of demanding end markets.

About the Largest Mold Companies in the U.S.

LexaMar Corp.
Boyne City, MI | 400 Employees

Founded in 1985, LexaMar Corp. operates from a 118,000-square-foot facility and produces plastic injection molds for national and international markets. As a publicly traded corporation holding QS9000 certification, the company serves customers with quality system requirements typical of the automotive and durable goods sectors.

Jones Plastic & Engineering Co., LLC
Jeffersontown, KY | 300 Employees

Established in 1961, Jones Plastic & Engineering operates out of a 200,000-square-foot facility and has grown into a vertically integrated manufacturer that combines plastic injection mold production with its Rev-A-Shelf line of kitchen, bathroom, and closet storage accessories. The company holds ISO 9001 certification and reports annual sales of $306 million, making it one of the highest-revenue companies in the sector.

Mold Masters Intl., LLC
Eastlake, OH | 245 Employees

With roots dating to 1961, Mold Masters Intl. operates from a 78,000-square-foot facility and produces wax, plastic, and ceramic molds alongside airfoil investment castings and jet engine components. Its tool and die capabilities extend its reach into aerospace and other high-precision markets where material and dimensional requirements are especially demanding.

MMI Engineered Solutions
Saline, MI | 212 Employees

Founded in 1983, MMI Engineered Solutions pairs mold manufacturing with plastic injection molding production from a 160,000-square-foot facility, allowing customers to source both tooling and finished parts from a single supplier. The company holds ISO 9001 and IATF 16949 certifications and reports annual sales of $82 million, reflecting a strong position in the automotive supply chain.

Hi-Tech Mold & Engineering, Inc.
Rochester Hills, MI | 200 Employees

Established in 1987, Hi-Tech Mold & Engineering serves as corporate headquarters for a plastic injection mold operation with ISO 9001 certification, international distribution, and reported annual sales of $40 million. Its combination of engineering depth and certified quality systems supports automotive and industrial customers with demanding tooling specifications.

Prestige Mold, Inc.
Rancho Cucamonga, CA | 200 Employees

Founded in 1983, Prestige Mold operates from a 30,000-square-foot facility in Southern California and is one of the larger woman-owned mold manufacturers in the country, with reported annual sales of $25 million. Its California location serves the region's aerospace, medical device, and consumer products industries.

Universal Molding Co.
Downey, CA | 200 Employees

Universal Molding Co. combines aluminum mold production with extrusions, ferrous and nonferrous metal roll forming, and CNC machining, giving customers access to tooling and complementary fabricated metal components from a single source.

Precision Polymer Products
Pottstown, PA | 160 Employees

Founded in 1990, Precision Polymer Products operates from a 53,000-square-foot facility and specializes in silicone molds and rubber products, holding ISO 9001:2008 certification and serving international customers in medical, industrial sealing, and specialty consumer applications.

Seaway Plastics Engineering, LLC
Port Richey, FL | 151 Employees

Established in 1984, Seaway Plastics Engineering operates from an 80,000-square-foot facility and pairs plastic injection mold manufacturing with in-house molding production, tooling, pad printing, and painting. The company holds ISO 9001:2008 certification and serves national customers with a full-service approach that carries projects from tooling development through finished, decorated components.

Alwin
Clintonville, WI | 150 Employees

Founded in 1996, Alwin operates from a 72,000-square-foot facility and produces plastic injection molds and molded parts for international customers, with reported annual sales of $12 million. Its combined moldmaking and molding production capability allows it to serve customers seeking turnkey solutions from a single domestic partner.

IndustryNet's Top Mold Suppliers

Beyond the largest players, a broad network of specialized mold shops serves manufacturers across the country with regional access, niche technical capabilities, and the flexibility to handle custom projects that larger operations may not prioritize. These suppliers often differentiate themselves through deep expertise in specific mold types, fast turnaround, and close customer collaboration throughout the design and engineering process.

LMT Mercer Group (Ewing, NJ): LMT Mercer Group produces vinyl fence, deck, and railing component parts and accessories for the fence and railing industries, combining moldmaking with custom injection molding, warehousing, and distribution services.

American Tool & Engineering, Inc. (Greene, IA): American Tool & Engineering specializes in high-performance industrial molds for the blow molding, thermoforming, and pressure forming industries, with capabilities including blow, vacuum form, pressure form, and twin sheet molds, patterns, models, prototypes, 5-axis CNC machining, and gundrilling.

Above: American Tool & Engineering, Inc.

D & S Mold & Tool Co. (Marinette, WI): D & S Mold & Tool builds molds for the rubber and plastic industries, offering in-house design, prototype and production tooling, CNC milling and turning, CNC ram EDM, and mold repair and revision services.

Helm Tool Co., Inc. (Schaumburg, IL): Helm Tool produces injection molds, cutlery molds, closure and container molds, and die cast dies, serving a range of consumer goods and industrial applications from its Midwest facility.

M.R. Mold & Engineering Corp. (Brea, CA): M.R. Mold & Engineering focuses on liquid silicone rubber and plastic injection molds, also producing cold runner systems, pneumatic stuffer boxes, universal bases, and automation solutions for molding operations.

Mauston Tool Corp. (Mauston, WI): Mauston Tool Corp. provides production machining services with in-house design capability, supporting customers that need both tooling development and precision machined components from a single source.

Velosity (Forest Lake, MN): Velosity represents a consortium of four specialized manufacturing brands, including Teamvantage, MMD Medical, Custom Mold & Design, and Paradigme Engineering, giving customers access to a broad range of moldmaking and molding capabilities under a coordinated sourcing model.

ACW Plastic Products Inc. (Concord, NH): ACW Plastic Products provides custom plastic injection molding and production services with secondary assembly options, serving the medical, electronic, and industrial molding markets.

Associated Plastics Corp. (Ada, OH): Associated Plastics Corp. manufactures molded plastic parts through plastic injection molding, supporting a range of industrial and commercial customers with production-focused capabilities.

TJAR Innovations, LLC (Xenia, OH): TJAR Innovations produces plastic injection molds and plastic parts, offering customers a path from tooling development through parts production within a single operation.

Coffman Custom Machine (Grain Valley, MO): Coffman Custom Machine specializes in precision extrusion blow molds and production machining, with capabilities spanning mold design, building, and repair, as well as secondary tooling and drivetrain development components for the UTV market.

Contour Mold, Inc. (Elk River, MN): Contour Mold builds plastic injection molds, dies, and large and medium metal parts, supported by 3-axis CNC milling, 5-axis machining, and support pillar fabrication for mold assemblies.

Hi-Rel Plastics & Molding Corp. (Riverside, CA): Hi-Rel Plastics & Molding offers custom plastic injection molding, blow molding, rotational molding, thermoforming, vacuum forming, extrusion, packaging, machining, mold making, 3D design, prototyping, and secondary services, backed by ISO 9001:2015, AS 9100 Rev D, and ISO 13485:2016 certifications.

Above: Hi-Rel Plastics & Molding Corp. 

HTI Plastics, Inc. (Lincoln, NE): HTI Plastics produces custom and proprietary thermoplastic injection-molded products for the pharmaceuticals, animal health, food packaging, and sporting goods industries, with a product line that includes plastic lids and pharmaceutical applicators.

Lowrance Machine Shop, LLC (Houston, TX): Lowrance Machine Shop specializes in mold machining and parts-to-print manufacturing, with lathe and 5-axis mill capabilities serving customers across the Gulf Coast industrial market.

M & M Tool & Mold (Green Bay, WI): M & M Tool & Mold builds plastic injection molds for industrial customers, providing tooling solutions from a well-established Wisconsin shop with a strong regional presence.

MC Molds, Inc. (Williamston, MI): MC Molds produces blow molds and bottle trimmers for the plastics industry, alongside foam and vacuum molds for the automotive industry, and supports customers with custom machining and tooling for specialty parts and assemblies.

Mersen USA GS Corp.-St. Marys (St. Marys, PA): Mersen USA GS Corp. produces isostatic graphite, a critical material used in EDM electrodes and mold components, supporting the precision tooling industry with a specialty material not widely produced domestically.

Snider Mold Co., Inc. (Mequon, WI): Snider Mold Co. manufactures compression and injection molds alongside special contract manufacturing services, giving customers flexible tooling and production options from a long-established Wisconsin shop.

Tessy Tooling (Erie, PA): Tessy Tooling builds high-volume plastic injection molds for the consumer products and medical markets, specializing in production-grade tooling designed for sustained, high-cycle manufacturing environments.

Vincent Tool Technologies Corp. (Chippewa Falls, WI): Vincent Tool Technologies produces USA-made custom injection mold bases and operates a CNC milling and surface grinding job shop, with capabilities that include roughing of inserts, end-of-arm tooling fabrication, and CMM fixtures.

See all 600+ mold suppliers on IndustryNet.

Key Trends in Industrial Mold Manufacturing in 2026

1. Automotive Transition Driving New Tooling Investment

The ongoing shift toward electric vehicles is reshaping demand for mold shops. EVs require fewer powertrain components than internal combustion vehicles, but they introduce new tooling needs in battery housings, thermal management systems, structural body panels, and interior trim. Shops with experience in large-format tooling and multi-shot molding are finding new opportunities as automakers and their Tier 1 suppliers retool for the next generation of vehicle platforms.

2. Medical Device Growth Accelerating Precision Requirements

Demand for single-use medical components, diagnostic devices, and drug delivery systems continues to grow, pushing mold suppliers to tighten tolerances and expand their cleanroom capabilities. Medical customers typically require ISO 13485 quality systems and full material traceability, raising the bar for shops looking to enter or expand in this segment. Micro-molding, liquid silicone rubber tooling, and insert molds are among the most sought-after capabilities in the medical channel.

3. Reshoring Expanding the Domestic Opportunity

Years of offshoring plastic tooling to low-cost overseas manufacturers created quality, lead time, and intellectual property problems that many U.S. buyers are now actively working to correct. Reshoring activity has accelerated following supply chain disruptions, and domestic mold shops are benefiting. Companies with fast turnaround capability, engineering support, and the ability to handle complex multi-action tools are particularly well positioned to capture this returning business.

4. Advanced Machining and Automation Raising Shop Productivity

Five-axis CNC machining centers, high-speed milling, and in-process inspection systems are increasingly standard in competitive mold shops. Automation in the form of robotic pallet changers, lights-out machining, and integrated CMM systems is helping shops manage labor costs while improving throughput and consistency. Shops that have invested in advanced equipment are able to compress delivery timelines and handle more complex geometries without proportional increases in labor hours.

5. Material Complexity Requiring Broader Tooling Expertise

Manufacturers across industries are specifying newer engineering resins, fiber-reinforced composites, liquid silicone rubber, and bio-based plastics that impose different demands on mold surfaces, venting, gating, and cooling than conventional thermoplastics. Mold shops that understand material behavior and can collaborate early in the design process are becoming preferred partners, particularly for customers developing new products in regulated or high-performance applications.

6. Skilled Labor Shortages Pressuring Capacity

The mold industry depends heavily on experienced moldmakers, CNC programmers, and EDM operators, trades that require years of training and hands-on development. The average age of the U.S. mold shop workforce is rising, and many shops report difficulty filling skilled positions. Apprenticeship programs, community college partnerships, and in-house training pipelines are helping some shops address the gap, but workforce development remains a persistent constraint on industry growth.

7. Short-Run and Prototype Tooling Growing as a Business Line

Compressed product development cycles and growing interest in market testing before full-scale production are driving demand for prototype molds, bridge tooling, and short-run production tools. Aluminum tooling, soft steel molds, and 3D-printed inserts are enabling faster, more affordable tooling options for customers who need functional parts quickly. Shops that can serve both prototype and production tooling needs are well positioned to capture long-term customer relationships from the initial development phase forward.

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About This Data

MNI collects detailed information firsthand, making direct contact with each industrial company in the U.S. to verify multiple data points about their business. This data powers IndustryNet, an industrial sourcing platform connecting buyers with suppliers across thousands of product categories, and IndustrySelect, which offers real-time access to detailed company and executive profiles for sales, marketing, recruiting, and research.