Spring energized rod seals combine a polymer sealing element with an internal metal spring to provide constant force against the rod surface. This ensures reliable sealing in dynamic applications, especially where pressure, temperature, or media conditions vary. Made from materials like PTFE, PEEK, or other engineered plastics, spring energized rod seals are used in aerospace, chemical processing, cryogenic systems, and high-pressure hydraulics. They offer excellent resistance to wear, extrusion, and chemical attack while maintaining low friction.
