PEEK Material O-Rings & Backup Rings

PEEK Material O-Rings & Backup Rings

The company is the world’s best peek ring supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.

PEEK offers exceptional chemical resistance similar to PTFE but with superior mechanical properties. Additionally, its high-temperature strength makes it a valuable material in processing technologies.

With a continuous service temperature of 260°C, PEEK stands out as one of the most durable thermoplastics for temperature resistance. Its universal chemical resistance makes it desirable for parts in various processing equipment.

PEEK Plastic Properties and Material Selection Guide

Polyether-ether-ketone, commonly referred to as PEEK, is a high-performance, semi-crystalline plastic. It boasts several beneficial properties including excellent chemical resistance, superior mechanical strength, and good dimensional stability, with a long-term service temperature of up to 260°C (500°F). The most common types of PEEK plastics are PEEK natural, glass or carbon fiber modified, and PEEK PVX.

PEEK natural, the virgin form of PEEK, is the most widely utilized. It combines fantastic chemical resistance and mechanical strength with the highest toughness in the PEEK family. The material has an elongation at break of 15% and a notable impact strength (Charpy). However, its modulus of elasticity is 4200 MPa, making it the least wear-resistant compared to other modified PEEK materials. Therefore, when using PEEK natural in frictional conditions, be aware of potential material loss due to abrasion.

In terms of chemical resistance, PEEK natural excels greatly, with 98% sulfuric acid being one of the few substances capable of dissolving it. It also demonstrates various resistance levels to different chemicals. Moreover, PEEK natural's hydrolysis resistance makes it ideal for medical industry applications where exposure to steam is common.

Another significant property of PEEK is its insulation capability, crucial for applications like oil logging technology. For industries requiring materials to withstand high temperatures and pressures, such as in the oil and gas sector, PEEK's glass transition temperature of 150°C and long-term service temperature of 260°C make it an optimal choice. We have successfully used PEEK in oil logging tools at 170°C and 140 MPa, proving its reliability. However, if the temperature rises to 200°C with higher pressures, PEEK GF30 is recommended.

Want more information on peek gasket? Feel free to contact us.

Besides the mechanical and chemical properties mentioned, PEEK plastic also displays excellent electronic performance. Its stable dielectric constant and low dissipation factor make it suitable for telecommunications technology. We have successfully incorporated PEEK natural into electronic connectors, and its wave permeability exceeded expectations when machined into radomes.

PEEK's lightweight nature, with a density of only 1.31 g/cm³, is another noteworthy feature. This low density makes it an attractive material for structural components in the aerospace industry, where both lightweight and robust mechanical strength are crucial.

PEEK 30% Glass Fiber Filled (PEEK GF30)

PEEK GF30 is incorporated with short-chain glass fibers, enhancing its modulus to 6300 MPa, the highest among the PEEK family. This increased stiffness and wear resistance make it suitable for applications requiring rigid friction rather than impact, although it becomes brittle with an elongation at break of 5%.

Compared to PEEK natural, PEEK GF30 exhibits less deformation under high temperature and pressure due to the glass fibers. When subjected to conditions above 150°C, the glassy state reduction and subsequent decrease in mechanical strength are minimal, thanks to lower recrystallization. We successfully used PEEK GF30 in oil logging tools at 220°C and 180 MPa.

PEEK 30% Carbon Fiber Modified (PEEK CF30)

PEEK CF30, a 30% carbon fiber-filled version, combines high stiffness with reasonable toughness, achieving a modulus of elasticity of 6000 MPa and an elongation at break of 10%. The carbon fibers enhance wear resistance and friction performance, making PEEK CF30 ideal for sliding applications. Additionally, its excellent heat conduction and hydrolysis resistance make it suitable for medical technology.

PEEK 10% Graphite + 10% PTFE + 10% Carbon Fiber (PEEK PVX)

PEEK PVX, a composite of graphite, PTFE, and carbon fiber, is designed for optimal sliding and wear properties. Its low friction coefficient and minimal abrasion loss make it the best choice for sliding applications, earning it the moniker "bearing grade PEEK."

Contact us to discuss your requirements for seat peek. Our experienced sales team can help you identify the options that best suit your needs.