Polyether Ether Ketone (PEEK)

Regarded by many engineers as a “super polymer,” PEEK is a colorless, organic, semicrystalline thermoplastic in the polyaryletherketone (PAEK) family. It has a high modulus and hardness, which makes it more rigid and difficult to machine than softer polymers, like PTFE. PEEK is highly resistant to thermal degradation and attack by both organic and aqueous media. It resists creep and retains dimensional stability at high temperatures and pressures, making it ideal for use in seal backup/anti-extrusion devices, and high-temperature scraping applications in viscous media.

Key Properties of PEEK

temperature symbol
High
Temperature
Range
media symbol
Excellent
Media
Compatibility
friction symbol
Moderate
Coefficient
of Friction
tensile strength symbol
High
Tensile
Strength
hardness symbol
High
Hardness

Bal Seal® PEEK Material Performance

Our PEEK sealing materials for rotary, reciprocating, and static applications are formulated to provide optimal performance and service life in your designs. Our offering ranges from virgin PEEK to precision blends that leverage the additive properties of carbon fiber, PTFE, and other fillers to meet specific temperature pressure, speed, and wear requirements. PEEK formulations are available to meet strict NORSOK standards.

Temperature Resistance
(° fahrenheit)

temperature graph

Media Compatibility
(rating)

media graph

Friction
(µ at ambient temperature)

friction graph

Tensile Strength
(psi at break)

tensile strength graph

Hardness
(Shore D)

hardness graph

PEEK Seal Applications

PEEK Technical Resources

High-Performance Polymer
(P41 HT)

Polymer-Filled Polyether Ether
Ketone for High Temperature
Applications

(P170)

High-Performance Polymer
with Carbon Fiber and PTFE

(P69 HT)

Custom components that drive tomorrow’s technologies.

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