In the world of high-performance polymers, PEEK Rods stand as a pinnacle of engineering excellence. As a leading provider of advanced sealing and precision polymer solutions, Kaxite Sealing has dedicated decades to mastering the manufacture and application of these exceptional materials. PEEK (Polyether Ether Ketone) rods are not just another plastic stock shape; they are critical components in demanding environments where failure is not an option. This comprehensive guide delves into the properties, specifications, and applications of PEEK rods, showcasing why they are the material of choice for engineers across aerospace, medical, automotive, and semiconductor industries.
PEEK polymer is a semi-crystalline, high-temperature thermoplastic renowned for its exceptional balance of properties. Kaxite Sealing's PEEK rods are manufactured from premium-grade resins, ensuring consistent performance batch after batch. The inherent advantages of PEEK make it superior to metals, other plastics, and even many specialty alloys in specific scenarios.
Precision and reliability start with precise specifications. Kaxite Sealing offers PEEK rods in a comprehensive range of standard and custom sizes, tailored to meet diverse machining and performance requirements. Our rods are extruded or compression molded under stringent controls to ensure minimal internal stress, superior dimensional stability, and optimal machinability.
| Diameter (mm) | Diameter (inches) | Standard Length (mm) | Standard Length (inches) | Tolerance |
|---|---|---|---|---|
| 5 - 20 mm | 0.197" - 0.787" | 1000 mm | 39.37" | ±0.1 mm |
| 20 - 50 mm | 0.787" - 1.969" | 1000 mm / 2000 mm | 39.37" / 78.74" | ±0.15 mm |
| 50 - 150 mm | 1.969" - 5.906" | 500 mm / 1000 mm | 19.68" / 39.37" | ±0.2% |
| 150 - 300 mm | 5.906" - 11.811" | 500 mm | 19.68" | ±0.25% |
Note: Custom diameters and lengths are available upon request. Machining from plate or block is recommended for very large cross-sections.
| Property | Test Standard | Metric Value | Imperial Value |
|---|---|---|---|
| Tensile Strength | ISO 527 | 100 MPa | 14,500 psi |
| Flexural Modulus | ISO 178 | 4.0 GPa | 580,000 psi |
| Compressive Strength | ISO 604 | 120 MPa | 17,400 psi |
| Izod Impact Notched | ISO 180/1A | 4.5 kJ/m² | 2.1 ft-lb/in |
| Coefficient of Friction (Dynamic) | ASTM D1894 | 0.35 | 0.35 |
| Continuous Service Temp. | - | 250 °C | 482 °F |
| Thermal Conductivity | ISO 8302 | 0.25 W/m·K | 1.73 BTU·in/(hr·ft²·°F) |
| Water Absorption (24h) | ISO 62 | 0.1 % | 0.1 % |
To address specific application challenges, Kaxite Sealing provides PEEK rods in various reinforced and modified formulations. Each grade is engineered to enhance particular characteristics.
Q: What are the primary advantages of using PEEK rods over metal rods like stainless steel or aluminum?
A: PEEK rods offer several key advantages: they are significantly lighter (about 70% lighter than steel), are corrosion-resistant to a vast array of chemicals that degrade metals, provide excellent vibration damping, are electrically insulating, and can often operate without external lubrication. This reduces component weight, eliminates galvanic corrosion, and simplifies design in aggressive environments.
Q: How does the machining of PEEK rods compare to machining metals or other plastics?
A: PEEK is generally considered very machinable with standard metalworking tools (carbide or diamond-tipped recommended). However, it requires specific techniques: sharp tools, adequate cooling (compressed air is often preferred over liquid coolants to prevent moisture absorption), appropriate feeds and speeds to avoid melting or stress, and proper clamping to prevent deformation. Kaxite Sealing provides detailed machining guidelines with every order to ensure optimal results.
Q: Can PEEK rods be used for food processing or medical implant applications?
A: Yes, but specific grades must be selected. Kaxite Sealing offers FDA-compliant and USP Class VI compliant grades suitable for repeated food contact and medical device applications. For permanent human implants, specialized implant-grade PEEK (like PEEK-OPTIMA) is required, which we can source upon request. Our HPV (High-Purity Virgin) grade is ideal for medical instrument parts requiring repeated sterilization.
Q: What is the maximum continuous operating temperature for a PEEK rod?
A: The maximum continuous service temperature for unfilled PEEK in air is typically 250°C (482°F). For short-term exposure, it can withstand up to 310°C (590°F). It's important to note that the mechanical load, presence of chemicals, and the specific grade (e.g., carbon-filled grades can handle higher temps) will influence the practical temperature limit. Always consult Kaxite Sealing's engineering data for your specific conditions.
Q: Are PEEK rods suitable for high-pressure applications?
A> PEEK has excellent compressive strength and creep resistance, making it suitable for many high-pressure static sealing and structural applications. However, design is critical. Factors like wall thickness, support, temperature, and the presence of sharp edges must be carefully considered. For dynamic seals in high-pressure systems, the MT (wear-resistant) or CF30 grades from Kaxite Sealing are often specified for their enhanced performance.
Q: How do I choose between unfilled, glass-filled, and carbon-filled PEEK rods?
A: The choice depends on the application's priority. Use Unfilled PEEK for best all-around chemical resistance, toughness, and purity. Choose Glass-Filled PEEK (GF30) when you need higher stiffness, improved dimensional stability, and reduced creep under load at a lower cost than carbon-filled. Select Carbon-Filled PEEK (CF30) for the ultimate stiffness, best wear resistance, lowest friction, and higher thermal conductivity, often used in precision bearings and wear pads.
Q: Does Kaxite Sealing provide custom-machined components from PEEK rods?
A: Absolutely. Beyond supplying premium PEEK rod stock, Kaxite Sealing operates a state-of-the-art CNC machining facility. We can provide finished, precision-machined components—from simple bushings and seals to complex manifolds and prototypes—to your exact drawings and specifications, ensuring quality and saving you time and production costs.
The unique property profile of PEEK rods from Kaxite Sealing unlocks solutions in the most challenging sectors.
