Unlocking the Potential of Polyetherimide (PEI): Properties and Applications

Welcome to Plastic Service Centers, your trusted source for high-performance plastics and polymers. In today's blog, we are excited to delve into the world of Polyetherimide, or PEI for short. PEI is a remarkable thermoplastic that boasts a unique set of properties and a wide range of applications. Join us as we explore the versatility and versatility of this extraordinary material.

Understanding Polyetherimide (PEI)

Polyetherimide, often referred to by its trade name ULTEM™, is a high-performance thermoplastic known for its outstanding thermal, mechanical, and electrical properties. Developed by SABIC Innovative Plastics, PEI has become a go-to material in various industries, thanks to its impressive combination of characteristics.

Key Properties of PEI

Exceptional Heat Resistance

PEI can withstand continuous exposure to high temperatures, making it an excellent choice for applications requiring thermal stability. It maintains its mechanical strength and dimensional stability at temperatures exceeding 300°C (572°F), making it suitable for use in extreme environments.

Outstanding Chemical Resistance

PEI exhibits excellent resistance to a wide range of chemicals, including acids, bases, and hydrocarbons. This property makes it ideal for applications where exposure to aggressive chemicals is a concern.

High Strength and Stiffness

PEI offers impressive mechanical properties, including high tensile strength and stiffness. It maintains its structural integrity under heavy loads and performs well in applications demanding rigidity and durability.

Dimensional Stability

PEI has low moisture absorption and minimal thermal expansion, ensuring excellent dimensional stability over a wide temperature range.

Flame Resistance

PEI is inherently flame-resistant and can meet various industry-specific fire safety standards without the need for additional flame retardant additives.

Applications of PEI

Aerospace and Aviation

PEI's heat resistance and flame retardancy make it a preferred choice for aircraft interior components, such as cabin panels, seat frames, and electrical connectors.

Medical Devices

The biocompatibility and sterilizability of PEI make it suitable for medical device applications, including surgical instruments, equipment housings, and dental tools.


PEI's electrical insulating properties make it an ideal material for electrical connectors, sockets, and components in high-performance electronic devices.


PEI's combination of high strength, heat resistance, and chemical resistance is valuable in automotive applications, including sensors, connectors, and under-the-hood components.

Food Processing

PEI's food-contact compliance, chemical resistance, and ability to withstand high temperatures make it suitable for food processing equipment such as trays, housings, and conveyor components.

Plastic Service Centers | Your Trusted Supplier for Polyetherimide

Polyetherimide (PEI) is a true game-changer in the world of high-performance plastics. Its exceptional heat resistance, chemical resistance, strength, and electrical properties have made it an indispensable material across various industries, including aerospace, medical, electronics, automotive, and food processing.

At Plastic Service Centers, we are proud to offer a wide range of PEI products to cater to your specific needs. Whether you're looking for stock shapes, custom components, or technical support, our team is here to assist you in harnessing the full potential of this remarkable thermoplastic. Contact us today by calling (888) 447-5278 or sending in an online contact form to learn more about how PEI can benefit your projects and applications.