A single-acting O-Ring energized piston seal with hydrostatic pressure relief channel for dynamic applications. It prevents pressure trapping between seals under all service conditions. Installed in closed grooves, including grooves to ISO 7425, Stepseal® V offers high sealing efficiency. It also has low friction with no stick-slip, minimal breakout force and high wear resistance. Available in Turcon® or Zurcon® materials. The O-Ring is not included with this item.