PEEK (polyetheretherketone) serves from -40°C to +260°C with outstanding creep resistance, chemical stability and inherent flame retardancy. As an experienced PEEK material and PEEK rod supplier, PRES extrudes high molecular weight (HMW) rods in five grades — virgin/unfilled, GF30, CF30 (CA30), HPV bearing grade and ESD — from Ø6–250 mm × 1000 mm stock sizes. Every rod is precision-annealed so turned parts keep their straightness, roundness and concentricity after machining.
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● Why PRES PEEK Rods >> Grades at a Glance >> Which Grade to Choose >> Quick Selection Table >> Applications >> Detailed Data >> FAQ
Straightness is what makes or breaks a turned PEEK part. An unannealed rod carries locked-in extrusion stress that releases on the lathe — the blank bows, the bore goes oval, and the scrap bin fills up. PRES controls this at the mill: every rod is annealed and slow-cooled before shipment, and because we extrude from high molecular weight (HMW) resin, the blank also carries exceptional toughness and crack resistance under cyclic load. For the numbers behind this — mechanical data by grade, thermal limits, post-machining anneal practice — see the links in the detailed data section below.
Every rod is stress-relief annealed and slow-cooled before shipment, giving the machinist a straight, stress-free blank that retains roundness and concentricity after turning.
Standard length 1000 mm (2000/3000 mm for selected grades). We cut to your length and extrude custom diameters — send the drawing, get a stock-shape quote.
Extruded from high molecular weight PEEK: higher elongation at break and superior resistance to crack propagation under cyclic loading vs standard-viscosity grades.
PEEK rods divide into two families: pure (unfilled) resin — subdivided into industrial, food and medical grades — and modified grades, where glass fiber, carbon fiber, PTFE/graphite or static-control additives dramatically change performance and application fit.
| Family | Sub-Grade | Key Characteristics | Typical Parts |
|---|---|---|---|
| Pure (Unfilled) | Industrial | Best toughness & impact; general mechanical use | Jigs, fixtures, general pins |
| Food | High purity, FDA-compliant, washable | Food-contact plungers, trays | |
| Filled (Modified) | PEEK-HPV | Bearing grade: PTFE + graphite + carbon fiber; ultra-low friction | Bushings, seals, pump wear rings |
| PEEK-CA30 (CF30) | 30% carbon fiber; 3.5× thermal conductivity, highest strength | Bearings, aerospace, structural | |
| PEEK-GF30 | 30% glass fiber; high rigidity & creep resistance (not for wear) | Static structural components | |
| PEEK-ESD | Surface resistivity 106–109 Ω/sq; static dissipation | Wafer handlers, test fixtures |
Start from the property that matters most, then verify secondary factors (temperature, weight, machinability) with our team:
Maximum toughness, purity & FDA contact → Unfilled PEEK rod
Rigidity & dimensional stability at moderate cost → GF30 PEEK rod
Maximum strength & dry-running wear life → CF30 PEEK rod
Ultra-low friction bearing parts → Bearing grade (PEEK-HPV)
Static-sensitive assembly & wafer handling → ESD PEEK rod
Need insulation? Avoid CF30 — Unfilled and GF30 both hold volume resistivity above 1016 Ω·cm. For a property-by-property trade-off across all five grades, read the PEEK material selection guide, or contact our technical team for application-specific recommendations.
Commercial specifications at a glance — pick the grade, then jump to its full data page.
| Specification | Unfilled | GF30 | CF30 | ESD |
|---|---|---|---|---|
| Diameter (Ø) | 1–300 mm | 6–250 mm | 6–250 mm | 6–250 mm |
| Standard length | 1000 mm | 1000 mm | 1000 mm | 1000 mm |
| Color | Natural beige | Beige | Black | Black |
| Electrical behavior | Insulating | Insulating | Conductive | Static-dissipative |
| Wear resistance | Good | Not for wear parts | Exceptional | — |
| Machining | Easy | Moderate | Hard (abrasive) | — |
| FDA food contact | Yes | Yes | — | — |
Typical commercial specifications; 2000/3000 mm lengths and custom diameters available on request. Mechanical and thermal figures — tensile, flexural modulus, HDT, thermal conductivity, water absorption — are kept on the dedicated mechanical properties page, thermal performance page and in the selection guide to avoid duplication. Values are typical; validate with application-specific testing before finalizing design specifications.
PEEK rods are the starting stock for cylindrical, rotating and load-bearing components across demanding industries:
Semiconductor & Electronics Wafer-handling spindles, test-socket plungers, insulating bushings, and ESD-safe component holders. | Medical & Food Processing Surgical instrument shafts, orthopedic implant blanks, sterilization trays, and FDA-compliant food-contact plungers. |
Aerospace & Defence Structural pins, high-load bearing sleeves, seals, and thermal-management parts. | Oil, Gas & Petrochemical Valve stems, pump shafts, compressor seals, and downhole components in high-pressure steam. |
Industrial Machinery Precision gears, bushings, wear rings, guide pins, and actuator shafts. | Automotive & New Energy Transmission bearings, brake-system pistons, and high-temperature engine peripheral parts. |
In every case, our annealed HMW PEEK rods give the machinist a straight, stress-free blank — so turned parts retain roundness, straightness and concentricity after machining rather than relaxing into warpage once internal stresses are released. For tight-tolerance parts, a post-machining anneal (e.g. 150°C for 2 h with slow cooling) further relieves residual stress — see our PEEK rod thermal performance guide.
This page focuses on stock sizes, grades and ordering. For engineering depth, use:
PEEK rod mechanical properties — tensile, flexural modulus and strength retention by grade, plus rod size and direction effects.
PEEK rod thermal performance — thermal limits by grade, CLTE fit calculations, and annealing practice.
Bearing grade vs CF30 wear resistance — friction and wear data for dry-running bushings and seals.
PEEK material selection guide — full property tables for all five grades.
PEEK sheet — flat stock from the same annealing line.
Q1: What is the difference between Unfilled, GF30, CF30, ESD and bearing-grade PEEK rods?
A: Polyetheretherketone rod starts as a pure polymer with the best toughness and chemical resistance. GF30 adds 30% glass fiber for stiffness and dimensional stability; CF30 adds 30% carbon fiber for the highest strength, wear resistance and thermal conductivity but is electrically conductive; ESD grade controls static discharge (106–109 Ω·cm); the HPV bearing grade (PTFE + graphite + carbon fiber) delivers ultra-low friction for bushings and wear rings.
Q2: Which PEEK rod grade should I choose for electrical insulation?
A: Choose Unfilled PEEK or PEEK GF30 — both have volume resistivity above 1016 Ω·cm. CF30 is electrically conductive due to carbon fiber and must not be used where dielectric isolation is required.
Q3: Can PEEK rods be used in contact with food or medical devices?
A: Yes. Unfilled PEEK is available in FDA-compliant and USP Class VI grades, suitable for repeated food contact and certain medical device applications. Always confirm the specific grade certification with our team before specification.
Q4: What diameters and lengths are available?
A: Unfilled PEEK rods from Ø1–300 mm; GF30 and CF30 from Ø6–250 mm; ESD from Ø6–250 mm. Standard length is 1000 mm (2000/3000 mm for selected grades). Cut-to-length and custom diameters are available on request.
Q5: Is PEEK CF30 harder to machine than Unfilled PEEK?
A: Yes. Carbon fiber is abrasive, so CF30 accelerates tool wear — use carbide or PCD tooling, compressed-air cooling, and moderate cutting speeds. Unfilled PEEK machines similarly to metals and is the easiest grade to process.
Q6: Do you provide material certificates and datasheets?
A: Yes. Every PEEK rod shipment is accompanied by a full material datasheet covering tensile strength, modulus, HDT, thermal conductivity and more. Batch-specific certificates of compliance are available on request.
Q7: How does PEEK rod compare to metal rods (stainless steel, aluminum)?
A: PEEK rods are up to 80% lighter than steel, corrosion-resistant across a wide range of chemicals, electrically insulating (except CF30), and often run without external lubrication. They damp vibration better than metals but have lower absolute strength — use them where weight, corrosion or lubrication-free operation matter most.
Q8: Do you offer CNC machining and custom parts from PEEK rods?
A: Yes. PRES provides one-stop service including material supply, cut-to-length, and precision CNC machining. Send us your drawing and we will quote material + machining together.
Request a Quote or Sample
Need help selecting the right grade, diameter or length? Our engineering team typically responds within 2 business hours.
Phone / WeChat / WhatsApp: +86 18676969309 | Email: rioplastic@foxmail.com
No. 417, Chang Road, Changping Town, Dongguan City, Guangdong Province, China
