POM vs Nylon, PTFE, PP, and PEEK: How to Choose the Right Engineering Plastic

When it comes to engineering plastics, POM (polyoxymethylene)—also known as acetal—is a popular choice thanks to its excellent strength, wear resistance, and machinability. But how does it compare to other materials like Nylon (PA), PTFE, Polypropylene (PP), and PEEK? Each plastic has its strengths and weaknesses. Choosing the right one depends on your application needs—whether you’re looking for low friction, high chemical resistance, mechanical durability, or cost-efficiency.

Below is a detailed comparison to help you understand the differences between these materials and decide which one best suits your project.

POM is the ideal mid-range engineering plastic: It balances wear resistance, strength, and cost better than most materials, making it perfect for precision parts, moving components, and moderate-load environments.

• Choose Nylon if you need flexibility but can tolerate moisture.
• Choose PTFE for chemical resistance and ultra-low friction, but not structural strength.
• Choose PP for cost-sensitive, low-load, chemically resistant parts.
• Choose PEEK only for extreme heat, chemicals, and loads, when budget is not a concern.