Article Highlights & Notes

• Lake Erie Rubber is RFQUSA’s top custom rubber molder due to its ISO 9001 certification, diverse material expertise with cutting-edge elastomers, and expansive equipment optimized for large parts and high-volume production runs.
• Certification requirements, experience with specific elastomers, value-added services like DFM, rubber molding equipment, and tooling transfer solutions are all important to consider when selecting a custom rubber molding company.
• Endless options are possible for custom rubber molding projects, with some companies specializing in certain industries like aerospace or medical, and others offering broader molding processes that place a concentrated focus on competitive pricing and quality.
• Part specifications like vibration dampening, chemical resistance, tensile strength, desired longevity, and even final colors are important to consider when deciding between rubber molders.

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Considerations for Finding the Right Custom Rubber Molder

Are certifications necessary to produce your specific rubber parts?

Specific industries or sensitive custom rubber molding projects may require manufacturers to hold certain certifications. Quality management standards like ISO 9001 provide strict manufacturing protocols that document processes. Some rubber parts destined for use in medical fields may require ISO 13485. Other registrations with the FDA or ITAR are critical for consumer goods applications or defense projects.

What elastomers are specified in your part design?

Custom rubber part manufacturing requires broad knowledge of varying elastomers and how their specific properties or resistance levels pertain to the part design at hand. While some rubbers may be ideal for applications that risk exposure to oil or fuel (Nitrile/NBR), those very same elastomers will perform poorly in conditions with high ozone exposure. Working with an experienced custom rubber molder can help find the optimal rubber for your parts.

Do you need additional assistance refining part designs for manufacturability?

Sometimes part designs take some additional refining to make the leap from napkin sketches to prototypes and eventually full production runs. Custom rubber manufacturers may offer Design for Manufacturability assistance to improve part designs, tooling, and molding processes, while others offer full engineering and design services.

What rubber molding processes are you seeking from a custom manufacturer?

Custom rubber parts require varying molding processes and sometimes combine more than one of the injection, transfer, or compression molding techniques. Molding manufacturers may only specialize in one specific molding process, whereas others, like Lake Erie Rubber, offer all three services to customers.

Do you have tooling you’d like to transfer between service providers?

Are you switching between rubber molding providers and need to transfer or refurbish existing tooling? Look for rubber molding partners that offer tooling transfer services and can help streamline the process to achieve higher quality parts, more efficient production methods, and help stabilize costs and turnaround times.

Comparing Top Rubber Molders for Custom Parts

Top Ten Custom Rubber Molding Companies

#1 – Lake Erie Rubber

Location: Erie, PA

Specialty: ISO 9001-certified, diverse material expertise, oversized manufacturing equipment

Lake Erie Rubber & Manufacturing is a leading custom rubber molding company with more than 60 years of experience delivering precision FKM (Viton), nitrile, natural rubber, and other elastomer parts. The company provides full-service rubber molding capabilities, including injection, compression, and transfer molding, supporting demanding industries such as mining, rail, oil and gas, and consumer products.

Known for its ability to produce larger, heavy-duty molded components using specialty materials, Lake Erie Rubber supports projects that require durability, performance, and precision. The company is ISO 9001 certified and manufactures exclusively in the United States. Beyond molding, Lake Erie Rubber provides comprehensive engineering support, including material selection guidance, tooling design, and design-for-manufacturability optimization. A recent example includes helping Monster K9 reshore its rubber molding operations, reducing lead times by 50 percent and nearly doubling production capacity to maintain inventory availability and meet customer demand.

#2 – Custom Rubber Corp.

Location: Cleveland, Ohio

Specialty: Rapid turnaround times, cryogenic deflashing, specialty labeling, & testing

Custom Rubber Corp. is a U.S.-based manufacturer specializing in high-quality molded rubber components with a strong emphasis on long-term customer partnerships. The company combines on-time production performance with responsive, relationship-driven service throughout the entire product lifecycle.

Operating from its Cleveland, Ohio, facility, Custom Rubber Corp. manufactures molded rubber parts using compression, injection, and transfer molding processes. The company produces a wide range of custom components, including marine rubber products, handle grips, vibration isolation pads, and impact mats, while also offering prototyping support for new designs. Materials expertise includes silicone, EPDM, neoprene, nitrile, butyl, SBR, and natural rubber compounds. Serving industries such as marine, automotive, consumer products, electronics, lawn and garden, and industrial equipment, Custom Rubber Corp. is ISO 9001:2015 certified and compliant with REACH and RoHS requirements. All products are manufactured in the United States.

#3 – Minnesota Rubber & Plastics

Location: Minneapolis, MN

Specialty: Custom molded rubber, Liquid Silicon Rubber (LSR), Design & Prototyping

Over the last 75 years, Minnesota Rubber and Plastics has helped world-class organizations develop custom rubber parts to solve complex sealing and component challenges. The production process is fully supported by an in-house materials lab and exposure to a globalized manufacturing ecosystem. Minnesota Rubber & Plastics can deliver custom rubber parts for customers in the medical, food, beverage, infrastructure, and automotive industries. With a broad understanding of complex elastomers and part designs, they specialize in manufacturing custom-molded rubber components designated for integration into larger assemblies.

The company is now part of Trelleborg Sealing Solutions, one of the world’s leading developers and manufacturers of precision rubber seals, bearings, and other custom-molded polymer components.

#4 – Elastomer Technologies, Inc.

Location: Corona, CA

Specialty: ISO 9001/13485, Prototype Molding, Injection Molding, & High-Speed Converting

Elastomer Technologies, Inc., specializes in custom rubber molding and die-cutting part productions along with compression molding, high-speed converting, transfer molding, prototyping services, and injection molding. Operating in California, ETI maintains ISO 9001 and ISO 13485 (Medical) certifications, and brings an experienced approach to challenging product designs that require tight tolerances and exhaustive documentation. As an expert in liquid silicone rubber molding, ETI has several detailed case studies covering their work molding custom silicone pacifiers, surgical kit grommets, and water flow control valves.

#5 – VIP Rubber & Plastic

Location: La Habra, CA

Specialty: AS9100-Certified, 60+ Years of Experience, Rubber Extrusion, Custom Compound

VIP Rubber & Plastic Company is a U.S.-based manufacturer specializing in engineered elastomer solutions, with more than 60 years of industry experience. Operating from its California facility, the company provides precision rubber manufacturing services that include extrusion, sheet production, custom molded components, and in-house rubber compounding.

Known for its technical expertise and responsiveness, VIP Rubber supports customers across a wide range of industries requiring high-performance, American-made rubber components. The company works with all major elastomer materials and also develops custom compounds to meet unique mechanical, chemical, or environmental performance requirements. Its integrated capabilities make it a reliable partner for OEMs seeking durable, application-specific rubber solutions.

#6 – Soucy Baron

Location: Multiple Locations in the United States & Abroad

Specialty: Noise/Vibration/Harshness Research, Polymer Engineering, Adhesion/Overmolding

Soucy Baron is a global provider of custom-engineered rubber solutions with decades of experience delivering high-performance elastomer components for technically demanding applications. The company offers integrated capabilities that include product design, material compounding, molding, and assembly, allowing it to develop tailored rubber parts that meet strict durability and performance requirements.

Soucy Baron collaborates closely with customers from concept through full production, utilizing compression, transfer, and injection molding processes, including overmolding and flashless technologies. Its extensive material expertise spans natural and synthetic elastomers formulated for specialized operating environments.

The company serves a diverse range of industries, including agriculture, electric vehicles, powersports, industrial equipment, aerospace, and defense. By combining advanced elastomer science with scalable manufacturing, Soucy Baron supports OEMs seeking engineered rubber components optimized for long-term performance and reliability.

#7 – Da/Pro Rubber

Location: Broken Arrow, OK

Specialty: Custom Compounding, In-House Engineering, On-Site Tooling, ISO Certified

Da/Pro Rubber, Inc. is a U.S.-based manufacturer of precision-molded rubber, TPE, and plastic components serving highly technical industries. Founded in 1961, the company operates facilities in Broken Arrow and Owasso, Oklahoma, as well as Newburyport, Massachusetts, providing full-service support from prototyping through high-volume production.

Da/Pro specializes in compression, injection, transfer, micro molding, overmolding, and liquid injection molding processes, producing tight-tolerance components with minimal flash and high repeatability. Its in-house engineering and tooling capabilities allow for custom material formulation and mold development tailored to complex design requirements.

Serving aerospace, medical, electronics, and industrial markets, Da/Pro integrates advanced manufacturing controls and cleanroom molding capabilities to deliver high-performance elastomer and plastic components built for demanding operating environments.

#8 – GBSA

Location: Chardon, OH

Specialty: Mechanical seals and custom gaskets, oil seals, v-seals, custom packaging

GBSA is a U.S. manufacturer with deep expertise in mechanical and fluid sealing solutions, focused on engineered rubber and elastomer seals that protect equipment and retain fluids in demanding environments. The company’s roots lie in designing and supplying mechanical rotary seals, oil seals, V-seals, O-rings, and other sealing products, making it a go-to partner for applications that require reliable sealing performance.

GBSA supports both custom and standard sealing products, working with customers to engineer components to precise size, material, and tolerance specifications that match critical performance requirements. In addition to its core sealing expertise, the company offers molded rubber parts, precision-machined metal components, plastic and ceramic products, and assembly support, providing comprehensive solutions where sealing reliability is central.

Serving industries such as industrial equipment, agriculture, automotive, appliances, and more, GBSA combines sealing product knowledge with engineering support, quick turnaround, and value-added services like testing and custom coatings to meet unique application needs.

#9 – West American Rubber Company (WARCO)

Location: Orange, CA

Specialty: ISO 9001, Sheet Rubber Manufacturing, Rubber Extrusions, Custom Compounding

WARCO is a U.S.-based custom rubber manufacturer with a long history of producing engineered elastomer components for a wide range of industrial applications. The company offers comprehensive rubber molding capabilities, including compression, transfer, and injection molding, supported by in-house tooling, custom compounding, and material selection expertise.

Specializing in custom and semi-custom molded rubber parts, WARCO works with an extensive range of elastomer materials and formulations to meet specific performance requirements such as abrasion resistance, chemical exposure tolerance, vibration isolation, and dimensional stability. Its capabilities also include bonded assemblies and secondary operations to deliver ready-to-install components.

Serving industries from industrial equipment and construction to consumer products and specialty markets, WARCO emphasizes responsiveness, quality, and tailored solutions engineered to match precise design and functional criteria. All manufacturing is performed in the United States.

#10 – Greene Rubber Company

Location: Danielson, CT

Specialty: ITAR-Registered, AS9100-Certified, EMI Shielding, Over-Molding

Greene Rubber Company is a U.S.-based provider of engineered elastomer solutions with deep expertise in custom molded rubber parts and precision sealing products for performance-critical applications. The company offers a broad range of manufacturing capabilities, including compression, transfer, and injection molding, as well as bonded and assembled components tailored to demanding functional requirements.

Greene Rubber supports customers from concept through production, providing application-specific engineering assistance, material selection guidance, prototyping, and tooling design. Its experience spans a wide variety of elastomer compounds and formulations to address challenges such as fluid sealing, chemical exposure, mechanical wear, and environmental extremes.

Serving industries such as aerospace, industrial equipment, automotive, and marine, Greene Rubber combines technical knowledge with flexible production options to deliver reliable, high-quality molded rubber components engineered for durability and performance.