Rubber Extrusion Process & Top 10 Companies in The USA 2025
- Mark Smith
- May 15
- 4 min read
Updated: 4 days ago
Rubber extrusion is a vital process that turns raw rubber into highly functional components such as gaskets, seals, tubing, weatherstripping, and more. These components are crucial in industries ranging from automotive and aerospace to construction and agriculture. With the demand for durable, high-performance rubber parts increasing, U.S.-based manufacturers continue to lead the way in custom rubber extrusion.
How the Rubber Extrusion Process Works
Let's discuss the process.
Material Preparation The process begins with selecting raw rubber material, typically in the form of strips or pellets. Depending on the end-use requirements, common materials include EPDM, silicone, neoprene, and natural rubber.
Feeding into the Extruder The rubber is fed into an extruder, a machine that consists of a rotating screw housed inside a heated barrel. As the rubber moves through the screw, it is subjected to heat and pressure, gradually softening into a malleable state.
Shaping Through a Die Once softened, the rubber is forced through a die — a specially shaped metal plate that defines the profile of the final product. The die can be custom-designed to produce complex cross-sections such as hollow tubes, solid strips, or intricate sealing shapes.
Cooling and Vulcanization After extrusion, the rubber profile is cooled (typically via air or water baths). Some rubber types undergo vulcanization — a curing process involving heat and chemicals — to enhance elasticity, durability, and resistance to heat or chemicals.
Cutting and Finishing Finally, the extruded rubber is cut to the desired length and may undergo secondary processes such as splicing, taping, drilling, or adhesive application, depending on its intended function.
Why Rubber Extrusion?
Rubber extrusion offers several advantages:
Customization: Easily tailored to specific shapes and functions.
Cost-Effective: Ideal for high-volume production of uniform parts.
Material Versatility: Works with a wide range of rubber compounds.
Consistency: Ensures dimensional accuracy and performance.
Common Applications
Rubber extruded products are widely used in:
Automotive industry: weatherstrips, door seals, window channels
Construction: glazing gaskets, expansion joints
Appliances & Electronics: insulation tubing, cable protectors
Industrial equipment: vibration dampers, conveyor belts
Most Popular Top 10 Rubber Extrusion Companies
We highlight the most popular top 10 rubber extrusion companies in the USA in 2025—leaders in innovation, quality, and customization.
Location: Wilmington, North Carolina.
Asquare Parts Inc. is redefining industrial component sourcing with their custom rubber extrusion services. Serving the automotive, trailer, and heavy equipment sectors, they provide everything from precision rubber seals to flexible gaskets tailored for vibration resistance and heat exposure.
What makes Asquare unique is their combination of engineering expertise and digital convenience—you can request quotes, order, and track shipments all online. Their product portfolio also includes forging and metal casting solutions, giving clients a one-stop solution for industrial part needs.
Key Advantages:
Customizable rubber profiles
Cost-effective large-volume orders
Fast lead times
Technical consultation
Asquare Parts Inc. is particularly well-suited for businesses looking to streamline part procurement without compromising on quality.
2. Aero Rubber Company, Inc.
Location: Illinois Aero Rubber specializes in precision rubber extrusion for applications in medical, energy, and OEM equipment. Their custom capabilities include tight-tolerance tubing, cords, and hollow profiles. They also offer support for material selection based on ASTM standards, ensuring compliance and performance.
3. VIP Rubber and Plastic Company
Location: California VIP Rubber is one of the longest-standing family-owned rubber extrusion companies in the U.S. With deep experience in custom rubber and plastic extrusion, they provide weather seals, cords, bumpers, and tubing using a wide range of materials like EPDM, neoprene, and silicone. Their multi-industry service approach, including military-grade production, sets them apart.
4. Elasto Proxy Inc.
Location: Georgia Elasto Proxy provides engineered sealing solutions with a focus on complex applications such as military vehicles and electronic enclosures. Their rubber extrusion services include dual durometer profiles, bulb seals, and sponge-rubber solutions. The company is known for supporting low-volume manufacturing while maintaining high customization.
5. Britech Industries
Location: Florida With over three decades in the rubber industry, Britech offers tailored rubber extrusions for HVAC systems, lighting enclosures, and marine equipment. Their rapid prototyping service and flexible production runs make them ideal for startups and small-batch manufacturers.
6. Trim-Lok, Inc.
Location: California Trim-Lok manufactures edge trims, sealing profiles, and D-profile rubber extrusions. Their parts are commonly used in appliances, recreational vehicles, and automotive interiors. The company also provides CAD design assistance and tooling services, helping engineers optimize extrusion profiles for function and aesthetics.
7. Accurate Products, Inc.
Location: Illinois Accurate Products offers both rubber extrusion and molded rubber parts. Their catalog includes bumpers, tubing, and rubber strips designed for high-load or abrasive environments. They follow RoHS and REACH compliance standards for global product acceptance.
8. Southern Rubber Company, Inc.
Location: North Carolina Founded in 1925, Southern Rubber provides rubber extrusion and bonding solutions for OEM and defense markets. Their ability to bond rubber to metal and deliver precision-cut gaskets makes them a preferred vendor for applications requiring both durability and thermal insulation.
9. GSH Industries, Inc.
Location: Ohio GSH Industries is known for its full-service plastic and rubber extrusion capabilities. Their wide-ranging solutions serve sectors such as agriculture, electronics, and power generation. GSH also offers in-house tooling and secondary operations like hole-punching and notching—ideal for fully finished custom extrusions.
10. Qualiform Rubber Molding
Location: Ohio Though primarily a molding company, Qualiform also offers extruded rubber profiles. They are widely known for working with eco-friendly and recycled rubber compounds. Their services are frequently used by green building and environmental equipment manufacturers looking for sustainable sourcing practices.
Why Rubber Extrusion Matters in Modern Manufacturing
Rubber extrusion is vital for industries where flexibility, sealing, and material resistance are essential. Whether it’s weatherproofing an RV door, sealing a control cabinet, or insulating engine compartments, extruded rubber profiles provide the protection needed to enhance longevity and safety.
Key advantages of rubber extrusion include:
Custom profiles and cross-sections
Continuous lengths for efficiency
Material versatility (EPDM, Neoprene, Viton, Silicone)
Cost-effective tooling and production
For a more in-depth understanding, explore this rubber extrusion process guide.
Final Thoughts
The U.S. rubber extrusion industry is thriving due to innovation, material science, and precision manufacturing. Whether you're a procurement manager for trailers or an engineer designing a new product line, choosing the right partner can impact costs, lead time, and product performance.
Companies like Asquare Parts Inc. offer a refreshing take by combining digital convenience with engineering excellence, making them an ideal choice for manufacturers looking to future-proof their supply chain.
Visit www.asquareparts.com to explore custom rubber extrusion and industrial part sourcing.
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