Threaded shaft seal (GWD)
The threaded shaft seal is the standard seal for WITTE EXTRU and BOOSTER pumps, however, it can also be used as a special variation for POLY pumps. It is also described as a viscoseal and can optionally have a heated or cooled design. This dynamic seal can also be used for high temperatures. The application area of seals is generally determined by the suction pressure and the viscosity of the pumped medium. The viscosity of the medium, however, may also be influenced by tempering.