Contract Manufacturer of Precision Plastic and Metal Components, With Value-Added Services

Dielectric Manufacturing is a leading, one-source contract manufacturer of plastic and metal components and assemblies. We machine and fabricate a wide variety of materials, including thermosets, thermoplastics, ferrous metals and non-ferrous metals.

We offer machining, fabrication and related value-added services at three locations in Wisconsin and Iowa, making us a preferred single-source contract manufacturer.

Dielectric Manufacturing customers rely on our family of employees to deliver unparalleled, value-added solutions in design collaboration, prototyping, component manufacturing, assembly, packaging, and inventory services.

The highly knowledgeable Dielectric team is known for being a reliably attentive partner to a wide variety of businesses, including Fortune 500 companies.

Custom precision components that we manufacture become part of equipment used in diverse industries, including defense, aerospace, health care, food processing, power distribution, and agriculture. The parts and components we manufacture are used worldwide.

Our one-stop-shop approach assures that our customers benefit from the greatest efficiencies and responsiveness to time-sensitive deadlines.

Dielectric Manufacturing holds ISO 9001-2015 certification.


Value-added Services

  • Design collaboration
  • Prototyping
  • Welding
  • Flame polishing, buffing and sandblasting
  • Painting and silk screening
  • Special finishes
  • Insertion of component elements
  • Complete assembly and sub-assembly
  • Packaging –ranging from assembly kits to complete finished packaging
  • Inventory management
  • Delivery programs

We have been manufacturing custom parts for more than 50 years. Optimizing cost and performance is something we do every day to benefit our customers. No matter the size or complexity of your order, we will ensure you achieve the best results possible.

Our main office and manufacturing plant is in metropolitan Milwaukee. Additional manufacturing plants are in Waupaca, Wis., and Lake Mills, Iowa, giving us the capacity to meet customer deadlines.

Contact Dielectric Manufacturing for a quote on a project, or to learn more about our full range of services relating to component fabrication.Call 800-367-9122, use our Quick Contact form, or our Request a Quote form.

“Our Dielectric Manufacturing sales rep pays a lot of attention to us. He makes me feel like it’s more of a partner relationship and not just a vendor situation.”

Dielectric Manufacturing Knowledge Base


Learn about metal and plastic properties, see answers to frequently asked questions about parts and assemblies, and get other information on component fabrication and machining.

contact Dielectric Manufacturing


Need more information about plastic or metal component fabrication and assembly? Call us at 800-367-9122, or email