What is PEEK Material?

PEEK material (polyetheretherketone) is a high-performance, semi-crystalline engineering thermoplastic with outstanding harsh chemical resistance, very low moisture uptake, good fire performance, excellent mechanical strength across a broad temperature range, and good dimensional stability.

PEEK plastic is tough, strong, and rigid, with superior creep resistance, and is excellent for applications where thermal, chemical, and combustion properties are critical to performance. PEEK polymer retains stiffness and strength for use in harsh high-pressure, high-temperature (HPHT) environments. Greene Tweed was the first company to use PEEK material to withstand the harsh conditions of many oilfield applications. PEEK is often used as the body for electrical connectors, in a broad range of industries, including aerospace and semiconductor, to minimize thermal expansion, provide chemical resistance, and to promote effective sealing. Greene Tweed also uses PEEK materials for a variety of sealing system components, as well as sensor housings and numerous high-performance applications in aircraft engines and other demanding environments.


Greene Tweed has developed a patented technology to cross-link thermoplastic polymers for additional improvement in high-temperature performance. Arlon® 3000 XT is a non-filled, cross-linked thermoplastic material that maintains all of the expected benefits of conventional PEEK or PEK polymers while providing extended mechanical, electrical, and creep performance at high temperatures above 300°F (150°C).

Arlon® 3000 XT’s insulating properties, in addition to its performance in high-temperature environments, make it the superior choice for unbeatable reliability in the most severe applications. When it comes to high temperatures and applications requiring high voltage insulation, Arlon® 3000 XT has expanded capability beyond what PEEK and PEK solutions have traditionally provided.

Arlon® 3000 XT has been proven to have 100 times the electrical resistivity of PEEK and 30 times that of PEK at temperatures of 400˚F (204°C) and above, unlike any other thermoplastic on the market. At room temperature, Arlon® 3000 XT has extended capabilities above 20kV. Please visit www.arlon3000xt.com for more information.

PEEK Solutions by Greene Tweed

Greene Tweed offers a broad range of PEEK polymer solutions to meet the specific demands of the industries and applications we serve. Download this document for more information about Greene Tweed's PEEK Materials.