Polyurethane tubing is widely used across industrial, automotive, medical, and food processing applications due to its flexibility, durability, and chemical resistance. However, even high-quality PU tubing can encounter certain issues during its lifecycle, affecting performance and reliability. Understanding these common problems and knowing how to address them can help extend the life of your tubing, ensure operational safety, and reduce maintenance costs.
This article explores the most frequent issues with polyurethane tubing and provides practical solutions to overcome them, ensuring your systems operate smoothly and efficiently.
Issue 1: Cracking or Splitting
One common problem with PU tubing is cracking or splitting. This often occurs due to overextension, prolonged exposure to harsh environmental conditions, or natural aging of the material. Cracks can compromise the integrity of the tubing, leading to leaks or system failures.
Solutions:
- Choose tubing with the appropriate hardness and wall thickness for your application.
- Avoid over-stretching during installation or operation.
- Use UV-resistant or weather-resistant PU tubing if exposed to sunlight or harsh conditions.
- Perform routine inspections to detect early signs of wear and replace damaged sections promptly.
Issue 2: Leaks and Permeability
Leaks in polyurethane tubing can occur due to improper installation, poor-quality fittings, or chemical degradation over time. Even minor leaks can cause system inefficiencies or safety hazards.
Solutions:
- Ensure proper installation using high-quality connectors and fittings.
- Select PU tubing with high chemical and pressure resistance suitable for your application.
- Conduct pressure tests after installation to confirm system integrity.
- Regularly monitor tubing for signs of leakage or swelling.
Issue 3: Hardening or Loss of Flexibility
Over time, PU tubing may harden or lose its flexibility, particularly when exposed to high temperatures, UV light, or certain chemicals. Loss of elasticity can lead to cracks, reduced performance, or breakage.
Solutions:
- Use TPU tubing designed to withstand high temperatures and UV exposure.
- Avoid prolonged exposure to extreme conditions whenever possible.
- Replace aging tubing before it becomes brittle or compromised.
Issue 4: Chemical Degradation
Certain chemicals can affect the integrity of polyurethane tubing, causing swelling, cracking, or surface degradation. This is especially common in industrial environments where strong acids, bases, or solvents are present.
Solutions:
- Select PU tubing formulated for chemical resistance against the specific media it will contact.
- Consider protective linings or external shields in highly corrosive environments.
- Conduct regular inspections to identify early signs of chemical wear.
Issue 5: Abrasion and Wear
In applications where polyurethane tubing is subject to high friction or fluid flow, abrasion and surface wear can occur. Over time, this reduces the tube’s effectiveness and may lead to leaks or ruptures.
Solutions:
- Use abrasion-resistant PU tubing in high-wear areas.
- Add protective coverings or guides where tubing contacts surfaces or edges.
- Select the proper tubing diameter and wall thickness to minimize friction and wear.
Preventive Tips for Long-Lasting Polyurethane Tubing Performance
To maximize the lifespan of polyurethane tubing, consider the following preventive measures:
- Regularly inspect tubing for signs of cracking, hardening, or leaks.
- Ensure tubing is installed correctly with appropriate fittings and support.
- Match the tubing type to your operational environment, considering hardness, chemical exposure, and temperature.
- Replace worn or aged tubing promptly to maintain system efficiency.
- Invest in high-quality PU tubing from a reliable supplier to ensure consistent performance and durability.
Conclusion
Understanding common issues with polyurethane tubing—such as cracking, leaks, hardening, chemical degradation, and abrasion—enables industrial operators to take proactive measures, ensuring reliable performance and long-term efficiency.
For high-performance, durable, and customizable polyurethane tubing, trust PENGDE. With over 15 years of experience in PU plastic production and a track record of delivering reliable solutions worldwide, PENGDE offers tubing that meets rigorous industrial standards. Upgrade your systems today with premium PU tubing to reduce maintenance, enhance safety, and achieve long-lasting results.
Email: pengde2@pengde-pu.com
Company: PENGDE NEW MATERIAL TECHNOLOGY CO., LTD
