Automotive Parts Manufacturers
Dielectric Manufacturing Iowa
202 N 9th Ave E, Lake Mills, IA 50450, United States
- Contract manufacturer / job shop
- Founded 1966
- Family-owned
- ISO 9001:2015, ITAR Registered
About Dielectric Manufacturing Iowa
Dielectric Manufacturing operates from a 100,000-square-foot headquarters in Richfield, Wisconsin, just northwest of Milwaukee, with additional production plants in Waupaca, Wisconsin; Lake Mills, Iowa; and Richmond, Illinois. The company traces its roots to 1966 when Ray Esser founded Dielectric Corporation in central Wisconsin. The Esser family retains private ownership, and the name was updated to Dielectric Manufacturing in 2019 to reflect expanded capabilities beyond plastics into metal machining and carbon fiber composites. The firm functions as a single-source contract manufacturer, handling design collaboration, prototyping, machining, fabrication, welding, finishing, assembly, kitting, packaging, and inventory management. Its equipment roster includes vertical and horizontal machining centers, 5-axis milling, 6-axis laser cutting, routing, stamping, turning, bending, cold forming, and plastic and metal welding. The Richfield facility opened in 2020; the Waupaca site specializes in ferrous metals, while the Richmond location, acquired in October 2025 as EMS Industrial & Service Co., produces busbars. All three Wisconsin and Iowa plants hold ISO 9001:2015 certification, and the Waupaca operation maintains ITAR registration through the DDTC. Customers span aerospace, agriculture, defense, electrical, food processing, gas and oil, health care and medical equipment, power generation and distribution (including wind), power sports, marine, and data centers. The client base ranges from small businesses to Fortune 500 companies such as Eaton Corporation's Power Systems Division. Dielectric also distributes unfinished thermoplastics, thermosets, ferrous and non-ferrous metals, and carbon fiber composites in sheet, rod, tube, and block forms. The company emphasizes a partner-oriented approach, offering material selection guidance and design-for-manufacturability input to reduce cost and lead time. Standard lead times are quoted at two weeks, with expedited turnaround demonstrated on urgent orders. ITAR compliance and ongoing CMMC 2.0 implementation support defense-sector work.
Manufacturing capabilities
Finishing & coating
Assembly & services
Industries served
- Aerospace
- Agriculture
- Defense
- Electrical
- Food Processing
- Gas & Oil
- Health Care – Medical Equipment
- Power Generation and Distribution
- Wind Power
- Power Sports
- Marine
- Data Centers
Materials
Thermoplastics · Thermoset Plastics · Ferrous Metals · Non-Ferrous Metals · Carbon Fiber Composites
Company details
- Location
- Lake Mills, Iowa
- Company type
- Contract manufacturer / job shop
- Founded
- 1966
- Ownership
- Family-owned
- Export compliance
- ITAR registered, ITAR compliant
- Lead time
- 2 weeks standard
- Certifications
- ISO 9001:2015, ITAR Registered, CMMC 2.0 (implementing)
- Listed under
Frequently asked questions
Where is Dielectric Manufacturing Iowa located?
Dielectric Manufacturing Iowa is located at 202 N 9th Ave E, Lake Mills, IA 50450, United States.
What does Dielectric Manufacturing Iowa do?
Dielectric Manufacturing Iowa is listed under Automotive Parts Manufacturers, and its listed capabilities and products include Vertical Machining, Horizontal Machining, 5-Axis Machining, CNC Routing, 6-Axis Laser Cutting and Drilling/Tapping.
What industries does Dielectric Manufacturing Iowa serve?
Dielectric Manufacturing Iowa lists Aerospace, Agriculture, Defense, Electrical and Food Processing among the industries it serves.
What certifications does Dielectric Manufacturing Iowa have?
Certifications on file for Dielectric Manufacturing Iowa: ISO 9001:2015, ITAR Registered and CMMC 2.0 (implementing).
When was Dielectric Manufacturing Iowa founded?
Dielectric Manufacturing Iowa was founded in 1966.
How do I request a quote from Dielectric Manufacturing Iowa?
Use the Request a quote button on this page to send Dielectric Manufacturing Iowa your requirements through FirmsLedger, or call (641) 592-4300 and visit dielectricmfg.com.
What companies are similar to Dielectric Manufacturing Iowa?
Other Automotive Parts Manufacturers in Iowa listed on FirmsLedger include Axial Industries Ltd., Motor Parts and Automods.