How to Select the Right Silicone Tube for Your Peristaltic Pump

Choosing the right silicone tube for your peristaltic pump is essential to ensure optimal performance, long life, and safe fluid transfer. In this article, we’ll guide you through the key selection criteria and help you avoid common pitfalls.

1. Consider the Inner Diameter and Wall Thickness
The inner diameter (ID) affects the flow rate, while the wall thickness ensures the tube can withstand the compressive force of the rollers. Using the wrong size can cause leakage, backflow, or premature failure.

2. Assess the Fluid Type and Chemical Compatibility
Not all silicone tubing is suitable for every fluid. You should match the chemical resistance of the tube with your fluid — especially if dealing with aggressive reagents or high-pH solutions.

3. Temperature and Pressure Ratings
Always check the operating temperature range and pressure limits of your silicone tube. For high-temperature environments, medical-grade or platinum-cured silicone is often recommended.

4. Certifications and Compliance
If your application involves food, pharma, or bioprocessing, ensure the tube meets standards like:

FDA 21 CFR 177.2600

USP Class VI

RoHS & REACH compliance

5. Tube Life and Replacement Cycle
Even the best silicone tube will wear out eventually. Look for tubing with excellent compression set resistance and defined service life. Keeping a regular replacement schedule ensures consistent performance.

6. OEM and Custom Tube Options
Many suppliers offer custom lengths, diameters, and hardness levels (measured in Shore A) to suit specific pump models. For high-volume or OEM use, sourcing from a reliable manufacturer ensures long-term consistency.

Conclusion
Selecting the right silicone tube is not just about size—it’s about compatibility, durability, and application-specific needs. Whether you're building a new system or maintaining an existing one, making the right choice ensures efficiency, safety, and longevity of your peristaltic pump setup.