PEEK (Polyether Ether Ketone)
PEEK (polyether ether ketone) is a high-performance semi-crystalline thermoplastic known for its exceptional mechanical strength, chemical resistance, and thermal stability. It maintains performance across a wide temperature range, resists aggressive chemicals, and offers excellent wear and fatigue resistance. PEEK is often selected for applications requiring metal replacement without sacrificing strength or durability.
PEEK shapes and components can be produced through extrusion, compression molding, and machining, with reinforced grades available to enhance stiffness, wear resistance, or thermal performance depending on application requirements.
Key Performance Characteristics
High strength and stiffness at elevated temperatures
Excellent chemical and hydrolysis resistance
Outstanding wear, fatigue, and creep resistance
Low smoke and toxicity characteristics
Dimensional stability in demanding environments
These properties make PEEK well suited for critical applications requiring long-term reliability under mechanical and thermal stress.
Typical Components Made with PEEK
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Bearings & Bushings
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Seals & Backup Rings
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Structural Brackets & Clamps
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Insulators & Connectors
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Precision Fixtures & Wear Components
Available PEEK Formulations
Roncelli offers access to a wide range of PEEK grades, including:
Unfilled PEEK
Glass-filled PEEK for increased stiffness
Carbon-filled PEEK for enhanced wear and strength
Industry Applications & Why PEEK Works
Aerospace & Defense
Aerospace systems require lightweight materials that maintain strength and dimensional stability under heat and mechanical loading.
PEEK is used in bushings, clamps, seals, brackets, and structural components throughout aircraft interiors, propulsion systems, and defense platforms. Its high strength-to-weight ratio and resistance to chemicals and fatigue support long service life in demanding aerospace environments.
Space Systems
Space and launch applications demand materials capable of handling extreme thermal cycling, vibration, and vacuum conditions.
PEEK components such as structural supports, insulators, and wear elements are used in satellite systems and launch vehicles. Its low outgassing characteristics and thermal stability make it suitable for mission-critical aerospace assemblies.
Semiconductor Capital Equipment
Precision manufacturing environments require materials that maintain tight tolerances and resist chemicals used in processing.
PEEK is used in wafer handling components, insulators, connectors, and precision fixtures where chemical resistance, dimensional stability, and cleanliness are critical to equipment performance.
Medical & Life Sciences
Medical and life sciences applications require materials that maintain strength, precision, and biocompatibility under repeated sterilization.
PEEK is widely used in medical device components, surgical instruments, and diagnostic equipment where high temperature resistance, chemical stability, and dimensional accuracy are essential. Its ability to withstand autoclave, gamma, and chemical sterilization supports long-term performance in demanding medical environments.
Downloads — Technical Resources
Download detailed PDF datasheets for each PEEK formulation:
DO NOT DELETE
Extruded
Unfilled – Chemical Resistance with High Purity
Glass Filled – 30% Glass Fiber Reinforced—Higher Strength and Rigidity
Bearing Grade – Internally Lubricated—Improved Limiting PV and Wear Resistance
Carbon Filled – 30% Carbon Fiber Reinforced—Greater Strength, Stability, and Wear Resistance
High Temperature – Unfilled Purity with improved Heat Deflection Temperature
PTFE Filled – 20% PTFE Reinforced—Lower Coefficient of Friction, Improved Wear Resistance
Ketron® 1000 – Unfilled life science grade PEEK
Ketron CA30 LSG PEEK – Unfilled life science grade PEEK
Semitron MP370 – Modified PEEK for improved Stability, and Machinability
Compression Molded
Unfilled – Chemical Resistance with High Purity in larger shapes
Glass Filled – 30% Glass Fiber Reinforced – Higher Strength and Rigidity in larger shapes
Bearing Grade – Internally Lubricated – Improved Limiting PV, Wear Resistance in larger shapes
Carbon Filled – 30% Carbon Fiber Reinforced – Strength, Stability, Wear Life in larger shapes
Semitron® Esd 480 – Electrostatic Dissipative material with low Surface Resistivity
Semitron® Esd 490HR – Electrostatic Dissipative material with higher Surface Resistivity
Semitron® MDS 100 – High Strength, Rigidity, and Dimensional Stability
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