Have you ever started a project only to realise halfway through that you’re using the wrong materials? Selecting the right plastic tube might seem simple at first glance—but with so many types available, from PVC to PTFE, the decision can quickly become overwhelming. Whether you’re tackling a DIY plumbing job, upgrading a lab setup, or managing a commercial build, choosing the appropriate tube can make all the difference in durability, safety, and performance.
In this guide, we’ll walk you through the most common tubing options, compare materials like FEP vs PTFE, explore their ideal applications, and explain how external factors like temperature or chemical exposure can influence your choice. Plus, we’ll give you practical installation tips and answer common questions Australians have when choosing flexible tubing.
Why Material Matters in Tubing Selection
Choosing the wrong plastic tube isn’t just inconvenient—it can be dangerous. If the tubing isn’t built to handle the temperature, pressure, or chemicals of your setup, it could lead to leaks, contamination, or early failure. For instance, hot water supply lines need high-temperature tolerance, while gas lines require strict compliance with safety standards.
Before selecting, ask yourself:
- Will the tube handle hot liquids or gases?
- Will it be exposed to corrosive chemicals?
- Do you need flexibility or rigidity?
- What’s your long-term budget?
Getting these basics right will help you choose a solution that performs well without overspending.
Comparing Popular Types of Plastic Tubing
There’s no one-size-fits-all solution—each plastic tube type comes with its own strengths:
1. PVC (Polyvinyl Chloride)
A popular choice for general plumbing, PVC is durable, affordable, and chemical-resistant. However, it’s not ideal for high-temperature applications.
2. Polyethylene (PE)
Flexible and crack-resistant, PE tubing is widely used in irrigation and water transport. It’s budget-friendly but not suited for hot water systems.
3. Polypropylene (PP)
Offers higher temperature tolerance and chemical resistance than PE, making it suitable for lab and food-grade applications.
4. PTFE (Polytetrafluoroethylene)
Known for its extreme chemical and heat resistance, PTFE is excellent for demanding environments—but it comes at a higher cost.
5. FEP (Fluorinated Ethylene Propylene)
Similar to PTFE but slightly more flexible and transparent, making it easier to monitor fluid flow. Often used in chemical and medical applications.
FEP vs PTFE: What’s the Difference?
When comparing FEP tubing to PTFE, the key differences lie in transparency, flexibility, and temperature limits. PTFE handles slightly higher temperatures but is more rigid. FEP is often preferred for applications where visual inspection of fluids is needed.
Choose FEP if:
- You need clear tubing.
- Your project involves moderate to high temperatures.
- Cost is a concern, but chemical resistance is still required.
Choose PTFE if:
- Your system handles extremely high heat or aggressive chemicals.
- You need maximum durability.
Which Tube Is Best for Gas Lines?
For gas lines, safety is non-negotiable. In Australia, strict standards apply, and not all plastic tube materials are approved.
- Copper and steel are traditional choices due to high durability and pressure resistance.
- PE tubing (especially MDPE) may be used underground but must meet specific certifications.
- Always consult a licensed gas fitter before choosing or installing gas piping.
Plumbing Applications: Hot Water and Beyond
When it comes to hot water lines, you’ll need materials that won’t degrade over time:
- PEX and CPVC are ideal for hot water due to high-temperature ratings.
- Copper remains reliable but may require professional installation.
- Polypropylene offers a good balance of durability and safety for hot liquids.
Flexible plastic tube options reduce joint count and simplify installations, making them a favourite for both DIY projects and professional setups.
Polyethylene vs Polypropylene: Which Should You Use?
These two commonly used plastics often confuse people:
- PE (Polyethylene): Flexible, cheaper, and great for low-to-moderate temperature water transport.
- PP (Polypropylene): More rigid, with higher temperature resistance, suitable for food and lab use.
If you’re navigating around corners or working on a backyard irrigation system, go with PE. For high-heat or chemically sensitive environments, PP is the better choice.
Final Tips Before You Install
Choosing the right material is only part of the equation—correct installation is equally crucial.
Tips for a smooth setup:
- Use clean, straight cuts to avoid leaks.
- Don’t overtighten fittings—plastic can crack.
- Ensure all components (fittings, clamps, etc.) are compatible.
- Check UV resistance if the plastic tube will be used outdoors in Australia’s strong sun.
Regular inspection helps spot wear or minor leaks early, extending your system’s life and performance.
Conclusion
Choosing the right plastic tube comes down to understanding your project’s unique requirements—pressure, temperature, chemical exposure, and flexibility. While cost matters, investing in the correct tubing now will save you from repairs and replacements later.
Whether you’re weighing FEP vs PTFE, installing a hot water line, or working on a chemical setup, use this guide to help you make an informed, confident decision. And remember: always consult a professional for installations involving gas or complex systems.
With the right knowledge and materials, your next project can flow smoothly—literally.
