Overview
PEEK precision components are custom-engineered parts machined from polyether ether ketone (PEEK) to exact customer drawings and tolerances, delivering a combination of high mechanical strength, thermal stability, chemical resistance, and wear performance unmatched by most other engineering plastics. PEEK retains its properties at continuous service temperatures up to 260°C, resists a broad range of chemicals and lubricants, and offers excellent fatigue and creep resistance. These characteristics make precision PEEK components essential in semiconductor equipment, medical devices, aerospace systems, oil and gas instrumentation, and high-performance electrical assemblies. OrroMFG machines PEEK precision components on multi-axis CNC equipment, using careful tooling and process control to achieve the tight tolerances and fine finishes these applications demand.
PEEK is available in several formulations that allow the material to be tailored to specific requirements. Virgin PEEK provides the best balance of strength, toughness, and purity for general precision parts and medical components. Carbon-filled PEEK adds stiffness, strength, and dimensional stability, and can provide electrical conductivity for anti-static and ESD applications. Glass-filled PEEK increases stiffness and load capacity while improving thermal performance, and PTFE-blended PEEK reduces friction and wear for sliding and bearing applications. OrroMFG machines precision components including insulators, bushings, seals, wear pads, fixtures, and structural parts, and can supply medical-grade and low-outgassing grades with the supporting documentation that regulated industries require.
Key Features
- High Strength and Stiffness: PEEK offers outstanding mechanical strength and rigidity for an unfilled polymer, comparable in some respects to light metals, at a fraction of the weight.
- High Temperature Resistance: Continuous service up to 260°C, with excellent retention of mechanical properties at elevated temperatures where nylon or POM would soften.
- Excellent Chemical Resistance: Resists fuels, hydraulic fluids, lubricants, solvents, and many industrial chemicals, maintaining performance in aggressive environments.
- Superior Wear and Fatigue Resistance: Low friction and excellent fatigue performance under cyclic loading deliver long service life in dynamic applications.
- Dimensional Stability: Low moisture absorption and low thermal expansion keep critical dimensions stable across temperature and humidity changes.
- Biocompatible and Low Outgassing: Medical-grade PEEK is sterilization-resistant and biocompatible, while low-outgassing grades suit vacuum and aerospace service.
Material Specifications
| Property | Virgin PEEK | 30% Carbon-Filled PEEK | 30% Glass-Filled PEEK | PEEK + PTFE Blend |
|---|---|---|---|---|
| Density (g/cm³) | 1.30 - 1.32 | 1.40 - 1.45 | 1.50 - 1.55 | 1.35 - 1.45 |
| Tensile Strength (MPa) | 90 - 100 | 130 - 150 | 120 - 140 | 70 - 85 |
| Tensile Modulus (GPa) | 3.6 - 4.0 | 7.5 - 9.0 | 7.0 - 8.5 | 3.0 - 3.5 |
| Flexural Strength (MPa) | 150 - 170 | 220 - 250 | 200 - 230 | 110 - 130 |
| Flexural Modulus (GPa) | 3.6 - 4.0 | 8.0 - 10.0 | 7.5 - 9.5 | 3.0 - 3.5 |
| HDT at 1.8 MPa (°C) | 150 - 160 | 240 - 260 | 230 - 250 | 140 - 155 |
| Continuous Service Temp (°C) | 260 | 260 | 260 | 240 |
| Hardness (Rockwell M) | 80 - 90 | 95 - 105 | 90 - 100 | 70 - 80 |
| Coefficient of Friction | 0.25 - 0.35 | 0.18 - 0.25 | 0.25 - 0.35 | 0.10 - 0.18 |
| Water Absorption (24h, %) | 0.1 - 0.2 | 0.05 - 0.15 | 0.1 - 0.2 | 0.08 - 0.15 |
| Fatigue Strength (MPa, 10⁷ cycles) | 40 - 50 | 60 - 70 | 55 - 65 | 30 - 40 |
| Limiting PV (MPa·m/s) | 0.5 - 1.0 | 1.0 - 2.0 | 0.8 - 1.5 | 1.5 - 3.0 |
Applications
Semiconductor Manufacturing
PEEK precision components are used in wafer-handling robots, process chambers, spin coaters, and CMP equipment, where low particle generation, chemical resistance, and vacuum compatibility are essential. PEEK’s dimensional stability maintains precise fits through thermal cycling, and carbon-filled grades provide ESD protection for sensitive electronics. OrroMFG machines these components to tight tolerances and supplies them clean for cleanroom assembly.
Medical Devices and Life Sciences
In medical devices, precision PEEK components serve as instrument parts, implant-adjacent components, surgical tool handles, and fluid-path fittings. Medical-grade PEEK is biocompatible, withstands repeated autoclave and gamma sterilization, and is radiolucent, which is valuable for imaging and surgical applications. Its strength and low weight reduce hand fatigue in handheld instruments.
Aerospace and Defense
PEEK precision components are used in aircraft and defense systems as structural brackets, bushings, insulators, and fluid-system parts where weight reduction and high-temperature performance are critical. PEEK resists fuels, hydraulic fluids, and lubricants, and low-outgassing grades meet the cleanliness requirements of space and vacuum systems. Its strength-to-weight ratio supports lighter assemblies and improved efficiency.
Oil and Gas
In oil and gas instrumentation and equipment, PEEK precision components serve as seals, bushings, back-up rings, and electrical connector parts that must withstand high pressure, elevated temperature, and aggressive wellbore fluids. PEEK resists hydrocarbons, acids, and brine, and retains mechanical strength at downhole temperatures. These properties extend component life in demanding subsea and downhole service.
Electrical and Electronics
PEEK precision components are used as insulators, connector bodies, standoffs, and structural parts in electrical and electronic equipment. Their high dielectric strength, wide temperature range, and dimensional stability support reliable insulation in high-performance and high-frequency circuits. Carbon-filled grades offer controlled conductivity for anti-static and ESD-sensitive applications.
Operating Conditions
- Temperature Range: -40°C to +260°C (-40°F to +500°F) continuous service; cryogenic service down to -196°C with appropriate grades
- Load Capacity: High mechanical strength supports structural and load-bearing duty; carbon- and glass-filled grades carry higher loads and resist creep
- Speed Rating: Suitable for sliding and dynamic contact; limiting PV values should be reviewed for high-speed rubbing applications
- Chemical Compatibility: Resistant to fuels, hydraulic fluids, lubricants, solvents, acids, and bases; not recommended for concentrated sulfuric acid or strong oxidizing agents
- Friction and Lubrication: Good natural lubricity; PTFE-blended grades further reduce friction for unlubricated sliding service
- Vacuum and Outgassing: Low-outgassing grades are suitable for high-vacuum and space applications
- Sterilization: Medical-grade PEEK withstands autoclave, gamma, and ethylene oxide sterilization without significant property loss
- Radiation Resistance: Good resistance to gamma and X-ray radiation for medical, nuclear, and aerospace applications
Material Comparison
| Material | Strength | Temp Range | Chemical Resistance | Cost | Best For |
|---|---|---|---|---|---|
| PEEK | Excellent | -40 to +260°C | Very Good | Very High | High-strength, high-temp, precision components |
| PTFE | Low | -200 to +260°C | Excellent | Medium-High | Maximum chemical resistance and low friction |
| POM (Acetal) | Good | -40 to +100°C | Fair | Medium | Low-friction, dimensionally stable precision parts |
| Nylon (PA6/PA66) | Good | -40 to +120°C | Fair | Low-Medium | Tough, economical structural parts |
| Aluminum | Excellent | -200 to +200°C | Fair | Low-Medium | Lightweight structural and conductive parts |
| Titanium | Excellent | -250 to +500°C | Excellent | Very High | Extreme strength, temperature, and corrosion duty |
Choose PEEK precision components when:
- High strength and stiffness are required in a lightweight, non-metallic part
- Continuous service temperatures approach or exceed 250°C
- Chemical resistance to fuels, fluids, solvents, and process media is essential
- Dimensional stability and creep resistance are critical to precision fit and function
- Biocompatibility, sterilization resistance, or radiolucency is required
- Low outgassing and low particle generation are needed for vacuum, cleanroom, or aerospace service
Customization Options
- Material Grades: Virgin PEEK, 10-40% carbon-filled, 10-40% glass-filled, PTFE-blended, medical-grade, ESD/conductive, and low-outgassing aerospace grades
- Size Range: Components from 1 mm to 500 mm in diameter; custom dimensions available
- Tolerances: Machined to IT6-IT8, with tighter tolerances and sub-micron finishes available for critical features
- Feature Machining: Threads, grooves, undercuts, tapers, sealing faces, thin walls, and complex 3D geometry via 5-axis machining
- Surface Finishes: As-machined, fine-finished, and polished surfaces for sealing, wear, and cleanliness requirements
- Part Types: Insulators, bushings, seals, wear pads, brackets, fixtures, connector bodies, and fully custom components
- Color Options: Natural tan, black (carbon-filled), and custom colors for identification or coding
- Purity and Compliance: Medical-grade and low-outgassing grades with supporting certification for regulated industries
- Secondary Operations: Deburring, cleaning, annealing, and clean packaging for medical, semiconductor, and aerospace use
- Design Support: Drawing review, tolerance optimization, and finite element analysis (FEA) support for demanding applications
Quality Assurance
OrroMFG manufactures PEEK precision components within an ISO 9001:2015 certified quality management system, applying documented controls that ensure consistent material grade and exacting geometry. Incoming PEEK stock is verified against supplier certificates and, where required, confirmed by FTIR spectroscopy and DSC thermal analysis to establish grade and filler content, with medical and aerospace grades supported by additional certification. Process control plans define machining parameters, tooling, and inspection frequencies so that critical characteristics such as bore diameter, outside diameter, wall thickness, and surface finish are monitored throughout production, and dedicated cleanroom areas with strict contamination control support medical and semiconductor-grade parts.
In-process inspection uses calibrated micrometers, bore gauges, and optical and surface-finish instruments to verify dimensions as components are turned and milled, and coordinate measuring machine (CMM) reports are available for precision programs. Final inspection includes 100% verification of critical features and sampling of surface finish and visual quality, with additional cleanliness and outgassing checks for sensitive applications. Finished components are supplied with material certificates, inspection reports, and batch traceability documentation, and first article inspection (FAI) reports are provided for new or high-value programs on request. This disciplined quality process ensures that every PEEK precision component meets the most demanding performance requirements in critical medical, semiconductor, aerospace, and industrial service.
