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Our Capabilities

We specialize in a range of rubber manufacturing processes, including lathe-cutting, extrusion, and compression/transfer molding. With expertise in elastomers like nitrile, neoprene, EPDM, SBR, natural rubber, silicone, and fluorocarbon, we’re capable of tackling projects of all sizes, from prototypes to large-scale production runs.

Our 26,000 square foot facility is equipped with project-oriented machinery that allows us to handle everything from experimental applications to full production. We routinely meet ASTM and Mil Spec requirements, ensuring that every part we produce meets the highest industry standards.

About Southern Michigan Rubber

Founded in 1990 by the Riley family, Southern Michigan Rubber (SMR) has been a trusted leader in the rubber manufacturing industry for over three decades.

With over 100 years of combined experience, the Riley family’s expertise spans management, quality control, engineering, customer service, costing, and plant maintenance. Their deep-rooted legacy of innovation and customer-centric solutions has been the cornerstone of our company’s growth.

Our Mission

At Southern Michigan Rubber, we are committed to providing high-quality rubber products with unparalleled customer service. Our family values—integrity, craftsmanship, and innovation—are woven into every product we make. We aim to create long-lasting relationships with our customers, providing them with solutions that are not only reliable but also cost-effective and tailored to their needs.

The Future

As a family-owned company, we continue to build on the strong foundation laid by our founders. Our commitment to innovation, quality, and customer satisfaction ensures that Southern Michigan Rubber will remain a trusted partner for all your rubber manufacturing needs.

Products & Services

With over 30 years of experience, Southern Michigan Rubber is recognized for delivering high-quality solutions across a wide range of applications, including gaskets, seals, vibration dampeners, bumpers, and more. Whether you need a small batch or large-scale production, we offer reliable, custom solutions that meet the most demanding specifications.

Rubber Moldings

Lathe Cutting

Rubber to Metal Bonding

Rubber Parts

Vibration Dampeners

Water Seals

Smooth Rolling / Grinding

Prototypes & Special Projects

Whether you’re looking for a high-volume solution or a quick prototype, we’ve got you covered. Contact us today for a consultation and discover how we can meet your needs.

Our Rubber Compounds:

Our custom rubber formulations can meet a variety of needs, from FDA-approved compounds to fire-retardant materials. Below is a list of compounds we offer using the Shore A scale for durometer.

  • Natural Rubber: 40–90 durometer

  • Nitrile (Buna-N): 40–90 durometer, including Carboxylated variant

  • Neoprene: 25–90 durometer, including fire retardant variants

  • Silicone: 30–80 durometer, including low and high-temperature variants -100.F to 500.F

  • Fluorocarbon: 50–90 durometer

  • EPDM: 40–90 durometer, including high molecular weight options

  • Urethane: 40–80 durometer

  • SBR: 40–90 durometer

  • Natural Rubber: 40–70 durometer

  • HNBR: 40–80 durometer

Our Capabilities:

  • Expedite your project with tooling designs completed in 2-6 weeks.

  • Remove excess materials and flash with precision using our cryogenic deflashing process.

  • We bond rubber to all common metals, making us the ideal partner for automotive and industrial applications.

  • Our molds can accommodate single or multi-cavity configurations for higher efficiency.

  • Steel or aluminum molds for maximum flexibility.

  • Capable of molding parts up to 24” x 24”.

Custom Rubber Solutions, Built to Last

From concept to production, we deliver precision and reliability.

Let’s create the perfect rubber component for your needs.