Electronics & Semiconductor Manufacturers
Diversified Plastics, Inc.
3721 Grant Creek Rd, Missoula, MT 59808, United States
- Manufacturer
- Founded 1976
- 60+ employees
- Family-owned
- ISO procedures
About Diversified Plastics, Inc.
Diversified Plastics, Inc. was founded in 1976 by Rod Reid in Missoula, Montana. The family-owned business began in Reid’s garage as a supplier of engineered plastic wear strips for lumber and pulp mills in the surrounding area. Today the company is led by Reid’s son, Brad Reid, a mechanical engineer, and operates from a 3.5‑acre campus in Missoula that is slated to reach 60,000 square feet of building space by the end of 2025. The company provides custom plastics fabrication and engineering services, combining injection molding of UHMW‑PE, CNC machining, cast urethane, thermoforming, plastics welding, vacuum forming, overmolding of steel parts, and its proprietary MultiFab hybrid component process under one roof. With more than 60 employees, the facility runs injection molding machines with shot capacities from 19 to 311 ounces, four 80,000‑pound material silos, and a broad CNC lineup that includes HAAS machining centers. Diversified Plastics delivers tens of thousands of parts annually, from prototype quantities to production runs of thousands. Customers span lumber and pulp processing, industrial wastewater treatment, mining, forest products, oil‑field equipment (such as McClain Oil Tools), grain handling, car‑wash systems, and even local breweries. The company ships to over 15 countries and serves OEMs, maintenance departments, and distributors seeking metal‑to‑plastic conversions, wear‑resistant components, and complex assemblies. Diversified Plastics differentiates itself through its MultiFab approach, which integrates fabrication, machining, injection molding, and polyurethane casting to reduce lead times and enable single‑source sourcing. Lean production protocols and collaborative, on‑site problem solving have been core to the operation since its garage start.
Manufacturing capabilities
Core processes
Finishing & coating
Inspection & quality
Assembly & services
Industries served
- Lumber and pulp mills
- Industrial wastewater treatment
- Mining
- Forest products
- Oil and gas equipment
- Grain handling
- Car wash equipment
- Brewing
- Crosslinked components
- Timber processing
- Energy
- Packaging
Materials
UHMW-PE · Nylon · Acetal · Urethane · Ultem · PEEK · HDPE · Polypropylene · Filled materials · Cast nylon · Polyureas · Epoxies · Regrind UHMW
Equipment
- HAAS CNC machines
Company details
- Location
- Missoula, Montana
- Company type
- Manufacturer
- Employees
- 60+
- Founded
- 1976
- Ownership
- Family-owned
- Production volume
- Prototype to production runs (tens to thousands of parts annually)
- Certifications
- ISO procedures
Frequently asked questions
Where is Diversified Plastics, Inc. located?
Diversified Plastics, Inc. is located at 3721 Grant Creek Rd, Missoula, MT 59808, United States.
What does Diversified Plastics, Inc. do?
Diversified Plastics, Inc. is listed under Electronics & Semiconductor Manufacturers, and its listed capabilities and products include Injection Molding UHMW-PE, Injection Molding (general), CNC Machining, Cast Urethane, Custom Fabrication and Thermoforming.
What industries does Diversified Plastics, Inc. serve?
Diversified Plastics, Inc. lists Lumber and pulp mills, Industrial wastewater treatment, Mining, Forest products and Oil and gas equipment among the industries it serves.
What certifications does Diversified Plastics, Inc. have?
Certifications on file for Diversified Plastics, Inc.: ISO procedures.
When was Diversified Plastics, Inc. founded?
Diversified Plastics, Inc. was founded in 1976 and has 60+ employees.
How do I request a quote from Diversified Plastics, Inc.?
Use the Request a quote button on this page to send Diversified Plastics, Inc. your requirements through FirmsLedger, or call (406) 543-6653 and visit dpiplastics.com.
What companies are similar to Diversified Plastics, Inc.?
Other Electronics & Semiconductor Manufacturers in Montana listed on FirmsLedger include Lattice Materials, Quantum Composers and DPS Electronics.