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Polyurethane rod, also known as PU rod, is a high-performance synthetic elastomer that sits between plastic and rubber, offering an unbeatable combination of toughness, elasticity, and durability. Manufactured by the reaction of polymer polyol and isocyanate, followed by chain extension and cross-linking, our PU rods are engineered to outperform traditional materials like rubber, nylon, and metal in demanding industrial environments. With customizable hardness, sizes, and formulations (polyether and polyester types), our polyurethane rods are widely used across multiple industries, delivering reliable performance in high-friction, high-load, and shock-absorbing applications.
Key Features & Advantages of Polyurethane Rod
Our polyurethane rods stand out for their exceptional comprehensive properties, making them the preferred choice for engineers and manufacturers worldwide. Here are the core advantages that set our PU rods apart:
• Superior Wear & Abrasion Resistance: The wear resistance of PU rod is 3-5 times higher than natural rubber and far exceeds nylon, with an Akron abrasion loss as low as 0.05 cm³/1.61 km, ensuring long service life in high-friction scenarios.
• Excellent Elasticity & Shock Absorption: Maintains high elasticity even in a wide hardness range (Shore A10 to Shore D75), effectively absorbing impact and vibration without permanent deformation, making it ideal for shock buffers and damping components.
• High Mechanical Strength: Combines the high strength of plastic and the elasticity of rubber, with excellent tensile strength, tear strength, and load-bearing capacity. At rubber hardness, its strength is much higher than ordinary rubber; at high hardness, it outperforms plastic in impact and flexural strength.
• Chemical & Oil Resistance: Highly resistant to mineral oil, fuel oil, mechanical oil, and most industrial chemicals, with low affinity for non-polar oils, ensuring stable performance in harsh chemical environments.
• Wide Hardness Range & Customization: Available in Shore A30 to Shore A95 (custom grades up to Shore D80), with customizable diameters, lengths, and colors to meet specific application requirements.
• Good Machinability: Can be easily turned, drilled, milled, and shaped using conventional machining tools, allowing for precise customization into rollers, bushings, and other industrial components.
• Weather & Radiation Resistance: Resistant to oxygen, ozone, sunlight, and high-energy radiation, maintaining performance in extreme temperature ranges (-32°C to 120°C) and harsh outdoor or industrial conditions.
Detailed Technical Specifications of Polyurethane Rod
Our polyurethane rods are available in two main types—polyether and polyester—each with unique properties to suit different application scenarios. Below is the comprehensive technical parameter table for both types, including standard and customizable options:
Parameter | Unit | Polyether Type PU Rod | Polyester Type PU Rod | Customizable Range |
Material | - | Cast Polyether Polyurethane (PU) | Cast Polyester Polyurethane (PU) | Virgin CPU, Special Formulations |
Density | g/cm³ | 1.15 | 1.20 | 1.15-1.25 |
Hardness | Shore A | 90A | 90A | Shore A30 - Shore D80 |
300% Tensile Modulus | kgf/cm² | 80-100 | 150-170 | 70-200 |
Tensile Strength | kgf/cm² | 200 | 520 | 180-550 |
Elongation at Break | % | 400 | 600 | 300-700 |
Tear Strength | kN/m | 80 | 140 | 70-160 |
Rebound Resilience | % | 28 | 30 | 25-40 |
Compression Set (22h×70°C) | % | 45 | 30 | ≤10-45 |
Akron Abrasion | mm³ | 0.6±2 | 0.08±2 | ≤0.05-0.8 |
Working Temperature Range | °C | -20 to 80 | -20 to 80 | -32 to 120 |
Water Absorption (24h) | % | ≤0.1 | ≤0.1 | ≤0.05-0.2 |
Dielectric Strength | kV/mm | 7.6 | 7.6 | 7.0-8.0 |
Standard Diameter | mm | 5-500 | 5-500 | 5-500 (Customizable) |
Standard Length | mm | 300/500/1000 | 300/500/1000 | Custom Cut to Length |
Color | - | Black, Yellow, Red | Black, Yellow, Red | Custom Colors (Blue, Green, Brown, etc.) |
Polyether vs Polyester PU Rod: How to Choose?
Understanding the differences between polyether and polyester polyurethane rods is crucial for selecting the right material for your application:
• Polyether Type PU Rod: Excels in low-temperature performance, water resistance, mold resistance, and rebound resilience. It has a lower viscosity, making it easier to process. Ideal for applications in humid environments, low-temperature settings, and scenarios requiring high impact strength and shock absorption (e.g., marine, cold storage equipment).
• Polyester Type PU Rod: Offers superior mechanical strength, tensile strength, tear strength, wear resistance, and oil resistance. It has strong adhesion to metals and excellent resistance to solvents and oxidation. Suitable for high-load, high-friction applications and environments exposed to oils and chemicals (e.g., automotive, industrial machinery).
Wide Applications of Polyurethane Rod Across Industries
Thanks to its versatile properties, polyurethane rod is widely used in various industrial sectors, serving as a key component in machinery, equipment, and custom parts. Below are the main application industries and specific use cases:
1. Metallurgy & Mining Industry
Used in mining equipment as wear pads, buffer blocks, and shock absorbers; in metallurgical machinery as rollers, bushings, and spacing components. Its high wear resistance and impact absorption help extend the service life of equipment in harsh, high-load environments.
2. Automotive Industry
Applied in automotive components such as shock absorbers, bushings, spacers, and seals. The excellent elasticity and oil resistance of PU rod ensure stable performance in automotive engines and suspension systems, reducing vibration and noise while improving durability.
3. Machinery & Manufacturing Industry
Ideal for heavy machinery, large stamping equipment, and general mechanical components. Common uses include mold springs, buffer pads, friction parts, conveyor rollers, and custom OEM parts. Its machinability and dimensional stability make it suitable for precision components.
4. Construction & Building Materials
Used as vibration-damping pads, spacers, and sealing components in construction machinery and building structures. The shock absorption and weather resistance of PU rod help reduce noise and protect equipment from damage during construction.
5. Textile & Printing Industry
Serves as rollers and guide components in textile and printing machinery. The soft yet durable surface of PU rod prevents damage to fabrics and printing materials while ensuring smooth operation and high wear resistance.
6. Oil & Gas Industry
Applied in oil field equipment as seals, bushings, and wear-resistant components. Its chemical resistance and durability make it suitable for use in harsh oil and gas environments, resisting corrosion from crude oil and industrial chemicals.
7. Sports & Leisure Industry
Used in sports equipment such as fitness器材 buffers, sports pad components, and protective gear. The high elasticity and shock absorption of PU rod provide comfort and safety for users.
8. Other Industries
Also widely used in marine equipment (buoyancy components, seals), aerospace tooling (precision spacers), food processing (food-grade PU rod for conveyor parts), and medical equipment (biocompatible custom parts).
Why Choose Our Polyurethane Rod?
• High-Quality Raw Materials: Made from 100% virgin CPU materials, ensuring consistent performance and durability. We strictly control the production process to avoid impurities and defects.
• Full Customization: Support custom diameters, lengths, hardness, colors, and formulations (polyether/polyester) to meet your specific application needs. Minimum order quantity (MOQ) is flexible, from small batches to bulk orders.
• Strict Quality Control: Each batch of PU rods undergoes rigorous testing (tensile strength, wear resistance, compression set, etc.) to ensure compliance with international standards and technical specifications.
• Competitive Pricing: Direct factory supply, eliminating middlemen, to provide you with high-quality products at competitive prices. Bulk orders enjoy additional discounts.
• Professional After-Sales Service: Our team of engineers provides technical consultation, helping you select the right PU rod type and specifications. We also offer fast delivery and after-sales support to solve any product-related issues.
Contact Us for Custom Polyurethane Rod Solutions
Whether you need standard polyurethane rods or custom solutions tailored to your industry, we are here to help. Our professional team will provide you with technical advice, competitive quotes, and high-quality products. Contact us today to discuss your requirements!
Email: peter@jsjiunai.com
Phone: +86-15961894256
Q1: What is the difference between polyurethane rod and rubber rod?
Polyurethane rod offers better wear resistance, tensile strength, and load-bearing capacity than rubber rod, with a longer service life (3-5 times that of rubber). It also maintains elasticity in a wider hardness range and is more resistant to oil and chemicals, while rubber rod is more affordable but less durable in harsh environments.
Q2: Can polyurethane rod be machined into custom parts?
Yes, our PU rods have excellent machinability and can be easily turned, drilled, milled, and cut into various custom shapes (rollers, bushings, seals, spacers, etc.) using conventional machining tools. We also offer custom machining services to meet your specific requirements.
Q3: What is the maximum temperature polyurethane rod can withstand?
Our standard PU rods can work stably in the temperature range of -32°C to 80°C. For high-temperature applications, we offer custom formulations that can withstand temperatures up to 120°C. It is not recommended for continuous use in hot water above 70°C.
Q4: Do you provide food-grade polyurethane rod?
Yes, we offer food-grade PU rods that meet international food safety standards, suitable for food processing equipment, conveyor components, and other applications that come into contact with food. These rods are non-toxic, odorless, and resistant to food-grade oils and chemicals.
Q5: What is the delivery time for polyurethane rod?
For standard sizes and colors, the delivery time is 3-5 working days. For custom orders, the delivery time depends on the specifications and order quantity, usually 7-15 working days. We also offer fast delivery options for urgent orders.
