👉 PFA (Perfluoroalkoxy) is a high-performance fluoropolymer with outstanding chemical resistance, excellent heat resistance, low friction coefficient, and strong electrical insulation properties.

👉 While both offer similar chemical resistance, PFA has superior melt-processability, allowing it to be injection molded. PTFE, by contrast, does not flow upon heating and therefore cannot be molded in the same way.

👉 They can be used continuously at around 260°C, with short-term tolerance at higher temperatures. However, exposure above 300°C should be avoided to prevent decomposition.

👉 PFA is virtually non-hygroscopic, meaning it does not absorb water or moisture. This ensures excellent dimensional stability, making it suitable for long-term use in humid or aqueous chemical environments.

👉 Thanks to their fluorinated molecular structure, PFA screws are inherently flame-resistant, achieving UL 94 V-0 rating without the need for additives. Like PEEK, PFA is self-extinguishing, making it ideal for high-temperature and safety-critical applications.

👉 PFA screws are resistant to nearly all acids, bases, oxidizing agents, and organic solvents, including aggressive chemicals such as HF, HCl, and H₂SO₄. They maintain their dimensional stability and performance even under long-term exposure.

👉 PFA Screws are ideal for semiconductor, optoelectronic, and analytical equipment where purity is critical. PFA screws do not leach contaminants or generate particulates, ensuring long-term reliability in chemical contact applications.

👉 PFA screws exhibit extremely low extractables and particle release, making them suitable for photoresist processing, chemical handling, and high-purity systems as non-load-bearing fasteners.

👉 PFA screws are well-suited for precision equipment in optoelectronics and high-purity environments. They withstand long-term chemical exposure, resist UV radiation and high heat, and are best used for non-load-bearing fastening or component positioning.

👉 PFA screws are recommended when chemical resistance and high purity are the top priorities. However, for applications requiring higher mechanical strength or rigidity, PEEK or PPS screws may be a better choice.