TURCON® STEPSEAL® V
Stepseal® V is based on the dynamic, unidirectional Stepseal® sealing concept.
Commercial Description
Stepseal® V is based on the dynamic, unidirectional Stepseal® sealing concept. During the extending stroke of the rod, focusing of contact force on the unique Stepseal® sealing edge creates high local sealing pressure and limits the micro fluid film formation under the seal. When the rod is retracted, the design of the full Stepseal® sealing face supports hydrodynamic back-pumping of the fluid film, and so ensures leak-free sealing efficiency with low friction and long service life.
In long-stroke cylinders, and equipment operating with low speed during retraction, it has been found that hydrodynamic back-pumping may become insufficient to prevent build-up of pressure in the seal system behind the primary seal. Pressure build-up in the seal system leads to leakage, increased friction and wear, and may ultimately require replacement of the seals. The usual precaution in such equipment has been to provide space for a buffer volume behind the primary seal, or to install a drain line. The built-in check valve function is used to eliminate pressure build-up and so render buffer volumes and drain lines obsolete. Extensive development has now brought the inherent prevention of pressure build-up together with dependable sealing performance in one element; Turcon® Stepseal® V. Stepseal® V has the efficient seal performance and outstanding service life of the Stepseal® range, and the reliable prevention of pressure build-up brought by a refined check valve function.
