The RSB ring is a rod seal of a single-acting hydraulic cylinder, which on the dynamic side presents a multifunctional double lip. Product advantages: reduces stick-slip effects thanks because it keeps oil between the secondary lip and the main one stops any external impurities faces the mate..
As described above, the sealing with O-Ring is the simplest and the most economic solution for not heavy working conditions. But when there are high pressures the O-Ring alone is not enough. In this specific case we must mount O-ring with one or two anti-extrusion rings, for the simple or double eff..