Materials for Custom Plastic Parts

Dielectric Manufacturing has a wide variety of thermoset materials and thermoplastic materials available to fabricate custom plastic parts. With our extensive knowledge of plastics, we’ll make sure the optimal material is selected for plastic machining of your part.

Get a QuoteFrom our Wisconsin and Iowa facilities, we have been providing plastic fabrication for more than 50 years. With that level of experience as a contract manufacturer of plastic parts, we have the knowledge and equipment needed to provide precision components to meet your exact needs.

Depending on the material of choice, plastics have broad insulating properties, greater resistance to corrosion when compared to metals, and better strength-to-weight ratios when compared to metals.

Search the DM Knowledge Base for plastic materials and their properties, including the electrical insulating properties of thermosets. Then, talk to us about your specific custom plastics needs; call 800-367-9122. We’re certain that if you are looking at custom plastic manufacturers, Dielectric Manufacturing, based in metro Milwaukee, Wisconsin, will stand out as a preferred partner.

Thermoset Materials

thermoset materialsThermoset materials are commonly used for electrical insulation, as the material cannot be melted once the shape is created.
A chemical reaction takes place during the manufacturing process, creating the permanently-hard nature of the material. These plastics are not recyclable.
Click on any material to learn about its properties.
Fish Paper (Vulcanized Fiber)Glass Cloth Phenolic Resin (G3)Glass-Melamine Laminate (G-5, G9)
Glass Silicone (G7)Glass Epoxy (G10, FR4)Glass Epoxy (G11)
Glass Polyester (GPO-1, GPO-2,GPO-3)Linen (LE)Nomex® (Synthetic Aromatic Polyamide Polymer)
Transformer Board (Press Board T-IV)

See thermoset material cost comparisons.

Thermoplastic Materials

thermoplastic materialsThermoplastic materials are available with various durometer hardness; the finished part can be very hard and strong or soft and pliable like rubber. Many of these materials can provide thermal and electrical insulation. Thermoplastics can be re-formed once the shape is manufactured, as the material experiences physical and not chemical change. Thus, parts made with thermoplastics are recyclable.
Click on any material to see its properties.
ABS (Acrylonitrile-Butadlene-Styrene)AcetalAcrylic
Celazole® Polybenzimidazole (PBI)Formex® (Flame Retardant Polypropylene)HYDEX 4101 UD blue
KEL-F® (PolyChloroFluoroEthylene)Kynar® (Polyvinylidene Fluoride)Lexan® (Polycarbonate)
PBT (Polybutylene Terephthalate)PEEK (Polyetheretherketone)PETG
Polyethylene (HDPE/LDPE)PolystyrenePVC (Polyvinyl Chloride)
Radel® (Polyphenylsulfone)TECAFORM® AH UD Blue - AcetalTECAPEEK UD blue
Teflon® (Polytetrafluoroethylene, PTFE)Torlon® (Polyamide-imide)UHMW (Ultra-High-Molecular-Weight Polyethylene)
Ultem® (Polyetherimide, PEI)Vespel® (High-Performance Polyimide-Based Plastic)Tecapeek UD Blue Ultra-Detectable

See thermoplastic material cost comparisons.

When you are considering plastic manufacturing companies, contact us to learn how you can benefit from our approach to custom plastics using either thermoplastic materials or thermoset materials.

We use CNC machines, not injection molding machines, to fabricate plastic components with great precision. Read about the difference.

“Their materials and market knowledge is superior.”

Dielectric Manufacturing Knowledge Base


Learn about thermoset plastic and thermoplastic material 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 thermoset plastic or thermoplastic component fabrication and assembly? Call us in metropolitan Milwaukee, Wisconsin, at 800-367-9122, or email