Since its establishment in 2015, SEJONG Co., Ltd. has achieved remarkable results in the fields of solar module components, electrical and electronic components, semiconductors, food and beverage, and conveyor systems ― using PTFE (Teflon), silicone, and stainless steel.
SEJONG’s major clients include Samsung, LG, Doosan, and Lotte. And the company holds various certifications, including Main-Biz and ISO9001.
PTFE (Teflon)
SEJONG’s Polytetrafluoroethylene (PTFE) offers excellent chemical resistance, resisting virtually all chemicals, acids, alkalis, and salts. It also offers fire resistance and aging resistance.
It has stable dimensions, high strength, and an elongation coefficient of less than 5%. It also has excellent temperature resistance, a low coefficient of friction, a dielectric constant, and high insulation properties.
It has excellent temperature resistance and its continuous operating temperature range is -70 to 260°C.
Furthermore, fabrics coated with PTFE according to various specifications can be used for conveyor belts, adhesive tapes, sealing tapes, etc. of various dryers.
It is used for corrosion prevention in petrochemical pipelines, electrical and electronic insulation, high-temperature-resistant cladding materials, environmental desulfurization of power plant exhaust gases, and gaskets.

Silicone Rubber Sheet
One of the key advantages of silicone rubber sheet is its ability to withstand high temperatures, typically up to 200°C, without breakdown or aging.
Silicone rubber sheet is resistant to a wide range of chemicals, including acids, alkalis, oils, and solvents. It is also highly resistant to UV rays, ozone, and weathering, making it suitable for outdoor use.
This product possesses excellent insulation properties and mechanical properties, including high elongation, tear resistance, and flexibility, making it suitable for a wide range of industrial applications.
Key advantages of silicone rubber sheet include high-temperature resistance and chemical resistance, and it can be customized to meet specific requirements, including color, hardness, and thickness.

“We aim to become a global leader through sustainable growth by expanding our business in 4th industrial era materials ― including semiconductors, drone component materials, secondary batteries, chemicals, and biotechnology ― in collaboration with various companies,” a spokesperson for the company explained.
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