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An Expert’s Guide To PTFE Coated Fasteners

PTFE Coated Fasteners

PTFE-coated fasteners have been used in numerous industries for decades. PTFE stands for polytetrafluoroethylene, a type of polymer known for its non-stick and low-friction properties. This type of coating provides numerous benefits, such as reducing friction and corrosion resistance, extending the life of fasteners, and improving their performance. This blog post will provide an expert guide to PTFE Coated Fasteners so you can understand how to use them properly in your next project.

What Are PTFE Coated Fasteners?

PTFE-coated fasteners are screws, bolts or nuts coated with PTFE. PTFE is applied using a process called electrostatic spraying. This process evenly distributes a thin layer of PTFE onto the surface of the fasteners. The result is a fastener with a hard and durable coating that provides exceptional corrosion resistance and low friction and prevents galling, cold welding, and seizing. PTFE-coated fasteners are ideal in highly corrosive environments such as chemical plants, refineries, and offshore oil rigs.

When To Use PTFE-Coated Fasteners?

PTFE Coated Fasteners are an excellent choice when dealing with harsh and corrosive environments. These fasteners resist various chemicals, including acids, oils, and solvents. They can also withstand extreme temperatures ranging from -200°C to +260°C. PTFE Coated Fasteners are ideal for many industries, including chemical, pharmaceutical, food processing, and oil and gas. They are also suitable for use in saltwater environments and areas with high humidity.

Advantages Of PTFE Coated Fasteners

The primary advantage of PTFE-coated fasteners is their corrosion resistance. They are highly resistant to rust and can last for decades in harsh environments. PTFE also provides excellent lubrication, reducing friction and wear and extending the fasteners’ lifespan. PTFE-coated fasteners have a low friction coefficient, allowing them to be easily installed and removed without the risk of the fasteners being damaged. They also prevent galling, cold welding, and seizing, saving time and money on repairs and replacements.

Limitations Of PTFE Coated Fasteners

One of the main limitations of PTFE-coated fasteners is their temperature range. They can withstand extreme temperatures ranging from -200°C to +260°C, but they may not perform well beyond this range. Additionally, PTFE-coated fasteners are unsuitable for applications with high-stress levels. They are also not intended for electrical applications, as PTFE is an insulator and can interfere with electrical currents.

How To Install PTFE Coated Fasteners

When installing PTFE-coated fasteners, it’s important to remember that the coating is brittle and can crack under stress. Applying the correct torque values and proper installation techniques is essential to avoid damaging the coating. Correct lubricants must also be used, as incorrect or incompatible lubes can easily damage PTFE-coated fasteners.

Conclusion

PTFE-coated fasteners offer many advantages, including corrosion resistance, low friction, and extended lifespan. They are also easy to install and remove, saving time and money on repairs and replacements. However, it’s essential to remember that PTFE-coated fasteners have limitations, such as temperature range and inability to handle high-stress applications. By understanding the advantages and limitations of PTFE-coated fasteners and using them correctly, you can improve the performance and longevity of your fastener system.

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