Pushing Innovation in Custom Plastics Since 1977

Trusted Custom Plastic Extruder and Injection Molder in Ohio

At Montville Plastics & Rubber, we prefer to do it ourselves, in house. We will take your project from concept and die design to final product and full-assembly packaging. It’s an important piece of what we do.

Montville will manufacture your part to perform like you need it to, guaranteed.

We’ve created more than 2,200 dies and enjoy the complexity of projects that some of our competitors may shy away from. We can work with most any resin and additives to ensure your product or part meets the requirements for temperature and low abrasion to strength and flexibility.

We started our business in a small garage in 1977 and today have a 150,000-square-foot headquarters outside Cleveland, Ohio, that continues to build long-standing partnerships that we take pride in.

If it’s been a while since we’ve talked, we’d love to hear from you again. If you’ve never tried our services before, we invite you to see why our customers continue to partner with us for custom profile extrusions, fabricated plastics and injection molding.

Learn more about our Capabilities here.

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We design and build all tooling in-house and are equipped with state-of-the-art wire EDM machines and a CNC machining center.

Our product development team and highly skilled tooling technicians will listen to your needs and partner with you to design high quality products and solutions at the most cost effective and functional design. We will help you evaluate and choose the right combination of materials and additives to ensure your finished part meets all of your specifications for strength, temperature and color.


  • Transportation- Standard Products/Capabilities
  • Utilities & Telecommunication
  • Building and Construction
  • Industrial Products
  • Mining and Oil and Gas



  • Design and Engineering
  • Custom Injection Molding
  • Custom Plastic Extrusion
  • Tool and Mold Services
  • Finishing and Secondary Operations