PTFE-lined rubber expansion joints, also known as polytetrafluoroethylene rubber expansion joints, are a type of composite rubber pipe joint.
Performance characteristics: Corrosion resistance, effectively protecting the rubber joint from corrosive media such as strong acids and alkalis; adaptable to various corrosive solvents; suitable for conveying various highly corrosive solvents; and capable of handling different types of corrosive media in chemical, pharmaceutical, and other industries.
While possessing corrosion resistance and high-temperature resistance, the original mechanical and physical properties of the rubber joint remain unaffected. It can still compensate for pipeline vibration, absorb pipeline displacement, and reduce pipeline noise.
For example, in pipeline systems, even with vibration and displacement, it can still function normally, playing a role in shock absorption and noise reduction. The coating surface is smooth, with a low coefficient of friction, strong non-adhesion, and excellent resistance to foreign matter adhesion. This helps reduce the resistance of media flow within the pipeline and is not easily affected by impurities.
In chemical pipelines, where they frequently come into contact with various strong acids, alkalis, and corrosive chemicals, PTFE-lined rubber expansion joints effectively prevent corrosion and ensure the normal operation of the pipeline system. They are used in applications such as chemical pipeline transportation, cooling, and dilution in the petrochemical industry. In environmental desulfurization processes, they are used to transport desulfurization-related media, and their corrosion resistance helps resist the erosion of pipeline joints by corrosive substances generated during the desulfurization process.
PTFE-lined rubber expansion joints are relatively inexpensive and more readily accepted by customers. Although PTFE has a slightly weaker ability to withstand negative pressure, it meets the needs of most customers who require rubber joints resistant to strong acids and alkalis. Their properties are superior to general corrosion-resistant rubber joints, exhibiting better performance in corrosion resistance and high-temperature resistance, and can adapt to harsher working environments, such as pipelines handling strong acids, strong alkalis, and high-temperature media.
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