For adjusting differential pressure inside and outside the casing and for degassing applications! PTFE porous film for automotive use.
Achieving both breathability and water-repellent, dust-proof properties!
This is a product that has porous PTFE created using proprietary technology. It retains the properties of fluoropolymer (such as heat resistance, chemical resistance, weather resistance, and electrical properties) while also providing breathability and water repellency. Utilizing its characteristic of allowing air to pass through while blocking water and dust, it can be used for differential pressure adjustment inside and outside enclosures in automotive parts, as well as for degassing applications. Additionally, a type with oil repellency is also available, which maintains stable performance even in harsh automotive environments susceptible to high temperatures, dust, and oil. 【Examples of Applications】 • Gas vent applications for ECUs and headlights • Sound-permeable dust-proof membranes for dash cams and in-car speakers • Waterproof breathable membranes for O₂ sensors 【Reasons for Choosing PTFE】 • Usable across a wide temperature range, including around engines and in cold regions • In addition to dust and water resistance, it can also provide oil repellency, making it suitable for harsher environments • Excellent resistance to automotive oil, with minimal aging degradation, allowing for sustained performance
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basic information
SEF-010 0.1Tx100W x 10~100M Air permeability: 18 sec, Water resistance: 120 kPa SEF-010HB 0.2Tx100W x 10~100M Air permeability: 13 sec, Water resistance: 80 kPa SEF-010-3 0.2Tx100W x 10~100M Air permeability: 20 sec, Water resistance: 140 kPa SEF-600 0.12Tx250W x 10M~ Air permeability: 10 sec, Water resistance: 170 kPa SEF-501N 0.05Tx300W x 10M~ Air permeability: 5 sec, Water resistance: 380 kPa SEF-503N 0.05Tx300W x 10M~ Air permeability: 6 sec, Water resistance: 350 kPa SEF-501M 0.08Tx300W x 10M~ Air permeability: 3 sec, Water resistance: 330 kPa SEF-503M 0.08Tx300W x 10M~ Air permeability: 4 sec, Water resistance: 280 kPa *Air permeability is measured using a Gurley-type permeability testing machine in accordance with JISP8117. *For more details, please feel free to contact us.
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Applications/Examples of results
【 Examples of Use 】 • Gas vent applications for ECU and headlights • Sound-permeable dustproof membrane for dash cameras and in-car speakers • Waterproof breathable membrane for O₂ sensors
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Company information
Our company was founded in 1963 as a comprehensive processing manufacturer of fluororesins and has consistently worked as a pioneer in the industry, striving for the development of new products and the exploration of new fields. Currently, we have local subsidiaries not only in Japan but also in Shanghai and Bangkok, and we are widely engaged in business with overseas customers, receiving high praise as "the fluororesin expert." Our factories are located in Matsuura City, Nagasaki Prefecture, Kanuma City, Tochigi Prefecture, and Changshu, Jiangsu Province, China. By establishing production bases both domestically and internationally, we have created a stable supply system.
