Good Electrical Insulation
Electrical insulating plastics for components and equipment
Plastic materials are commonly used for electrical insulation because many polymers offer high dielectric strength, low electrical conductivity, and resistance to heat or flame depending on the grade. Materials such as G10/FR-4, Ultem®, PEEK, PTFE, and other engineering plastics may be selected for insulating parts, electrical components, equipment housings, spacers, washers, and related applications.
Use this page as a starting point to compare plastics for electrical insulation, then review the plastic properties table or get a quote for your application. When electrical standards, flame ratings, or documentation are required, review the material data sheet and confirm the right grade before specifying a plastic.
Curbell Plastics can help you:
- Compare dielectric strength, temperature range, and flame-resistance considerations.
- Evaluate plastics used for electrical insulation, components, and equipment.
- Identify material options to consider for your application, documentation, and fabrication needs.
DuPont™ Vespel® Polyimide
Extremely high temperature creep resistant plastic with excellent friction and wear characteristics.
GPO-3 Thermoset
A glass reinforced thermoset polyester material with excellent mechanical and electrical properties.
LE Linen Phenolic
A composite sheet material that consists of electrical grade phenolic resin impregnated into layers of linen fabric.
Noryl®
Engineering plastic with outstanding strength, stiffness, and electrical insulating properties.
Torlon® PAI
Extremely stong, stiff, dimensionally stable plastic material often used in elevated temperature environments.
PBT
Strong, stiff plastic, excellent machining characteristics, bearing and wear, and chemical resistance.
PCTFE
Fluoropolymer with outstanding dimensional stability, mechanical properties, and temperature range.
PEEK
Strong, stiff plastic with outstanding chemical resistance; performs over a wide range of temperatures.
PFA
Flexible fluoropolymer that performs well in extreme temperature and harsh chemical environments.
PTFE
Low friction engineering plastic with outstanding chemical, high temperature, and weathering resistance.
XX Paper Phenolic
High strength, low cost composite made from phenolic resin impregnated into layers of paper.
DuPont™ Vespel® Polyimide
Extremely high temperature creep resistant plastic with excellent friction and wear characteristics.
GPO-3 Thermoset
A glass reinforced thermoset polyester material with excellent mechanical and electrical properties.
LE Linen Phenolic
A composite sheet material that consists of electrical grade phenolic resin impregnated into layers of linen fabric.
Noryl®
Engineering plastic with outstanding strength, stiffness, and electrical insulating properties.
Torlon® PAI
Extremely stong, stiff, dimensionally stable plastic material often used in elevated temperature environments.
PBT
Strong, stiff plastic, excellent machining characteristics, bearing and wear, and chemical resistance.
PCTFE
Fluoropolymer with outstanding dimensional stability, mechanical properties, and temperature range.
PEEK
Strong, stiff plastic with outstanding chemical resistance; performs over a wide range of temperatures.
PFA
Flexible fluoropolymer that performs well in extreme temperature and harsh chemical environments.
PTFE
Low friction engineering plastic with outstanding chemical, high temperature, and weathering resistance.
XX Paper Phenolic
High strength, low cost composite made from phenolic resin impregnated into layers of paper.
Not sure which materials best fit your needs?
Our experienced sales and technical teams are available to assist you with material selection challenges.
