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Diversified Plastics, Inc. is recognized as an Essential Business Manufacturer. Our operating hours remain the same as we continue to meet the essential needs of our customers, both domestic and international, during this pandemic health crisis.

Rest assured, we are taking pre-cautionary measures as per local, state, and Center for Disease Control (CDC) guidelines to limit exposure and ensure the health and safety of our valued customers and employees.

We’re diversified, so you don’t have to be.

We’re diversified, so you don’t have to be. Our MultiFab Technology combines the capabilities of Fabrication, Machining, Injection Molding, and PolyUrethane Casting under one roof, enabling us to manufacture any component using the necessary plastic for the application. This results in shorter lead times, one stop sourcing, and more adaptable engineering solutions.

Benefits that Plastic Components Offer

  • Noncorrosive
  • Self-lubricating
  • Low friction
  • FDA/USDA approved
  • Cost effective
  • Abrasion resistant
  • Durable


From design, to prototyping to process engineering, our experience with the wide range of plastic solutions allows us to solve any plastic component challenge. We also work closely with the leading chain manufacturers in the industry. We visit job sites across the country to review installation methods and to assess our customer’s needs. We’ve even hosted end users at our facility to detail our unique processes and our proven results. We are creative, engineering-minded problem solvers. And it shows.

Custom Fabrication

Diversified Plastics has the skills and equipment to employ a variety of fabrication processes for a variety of materials, from plastics to metals. This enable us to tackle projects that integrate disparate materials and take on complex forms. We can handle single assemblies as well as hundreds of units. We offer a complete range of service from plastic welding to vacuum forming to parts assembly. Our experienced fabricators are cross-trained on all processes and work in the most advanced software interfaces for 3-D fabrication. We employ a variety of advanced equipment and processes in fabricating. We have a vacuum forming machine up to 3’x4’, large ovens up to 5’x12’ for heat forming, and sheet bending equipment up to 10’ long. We also have hot air hand welders, extrusion welders, and hot plate sheet butt welders, and are able to do overlap shiplap welding and spin welding.


Injection molding and overmolding is an extremely flexible process that dramatically reduces waste and cost when creating parts especially in mid- to high-volume runs. Large or small, complicated or simple, Diversified Plastics can deliver the molded plastic components you need, on time and on budget. Our process begins at ground zero with in-house design and fabrication of custom tooling and molds, including low-cost aluminum mold inserts. Once we’ve created the molds and completed a test run, we begin full-line production using a variety of materials.


Machining out of solid engineered plastic stock is the ideal way to create parts for applications that require tight tolerances and uniform finish in low- to mid-quantity runs. Inside our 25,000-square-foot facility, you’ll find CNC mills, lathes, and routers, along with precise cutting, drilling, welding, bending, and forming equipment. Machining is ideal for extremely tight tolerances and strict specification requirements.


We combine the capabilities of Fabrication, Machining, Injection Molding, and PolyUrethane Casting under one roof to create an innovative solution for our customer. We call this MultiFab Technology. Our MultiFab capability allows us to create a superior product at a more competitive price and enables one component to be manufactured through several operation processes. MultiFab offers our customers a cost-effective solution when they want to convert to plastic components from metal or other multiple materials.


Forming plastic sheet material with heat and pressure is a very cost-effective and versatile process with low set-up and tooling costs, making it efficient for low volume runs.


Pouring liquid urethane into molds and allowing it to cure is a proven method for creating parts in a multitude of shapes, sizes and durometers. Creating urethane components and sheets is entirely different from working with traditional plastics and Diversified Plastics team members use proprietary processes and protocols to maximize the versatility and varying hardness of urethane. Our urethane parts will meet your specifications not only for shape and size, but also for hardness. In fact, we can cast urethane components in durometers from 40A to 75D.

Mold it or Machine it

Discover if your part is a candidate for molding with us! We look at the most cost effective solution through analysis of your part, how it is used and the quantity being manufactured.

Top 10 Reasons to Convert to Plastics

Without compromising the needed characteristics of metal, wood or glass, plastics provide strength, reduce weight, avoid abrasion, resist corrosion and provide additional flexibility in production which secures their use in many industrial applications.

Deer Island Wastewater Treatment

The Project: The Deer Island treatment plant, operated by the Massachusetts Water Resources Authority, is the public wastewater treatment facility for the city of Boston. The plant was undergoing an extensive refurbishment, replacing all of its chain and sprockets. Diversified Plastics, pre-qualified by...

DPI Life

DPI Celebrates 45 Years

DPI celebrates 45 years in business! We are so thankful...

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Missoula’s Diversified Plastics, Inc. to Receive 2020 Exporter of the Year Award

The Montana District Export Council, of which the Department of Commerce is a member, will award the Missoula-based manufacturing business Diversified Plastics, Inc., its 2020 Exporter of the Year award. “Diversified Plastics has demonstrated not only resilience but also growth during a time when the circumstances...

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Lee Enterprises Names Diversified Plastics, INC. a Winner of the Montana Top Workplaces 2021 Award

Missoula, Montana July 25, 2021 - Diversifed Plastics, Inc. has been awarded a Top Workplaces 2021 honor by The Montana Top Workplaces. The list is based solely on employee feedback gathered through a third-party survey administered by employee engagement technology partner Energage, LLC. The anonymous...

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Diversified Manufacturing

Diversified Plastics continually innovates and looks for ways to improve the life of a product and reduce procurement and maintenance costs. We help you choose the best process to maximize your investment.

Need Support?

When you know what you are looking for or want to start with an idea, we are ready to help. Please reach out and we will start you on your path to plastic solution success!

Give Us A Call


Outside the United States

+1 406-543-6653