A Herold pump is designed to last for decades. The contact-free lobes ensure not only a long life, they also generate savings and reduction in production losses. If you plan to renew your production process, a Wendelkolben Herold pump can be the ideal choice in both high viscosity and low viscosity interchangeably. For the sugar industry, special stress-free mechanical seals were developed, independent of the direction of rotation and suspended by springs out of the middle, in our standard version the O-rings are made of Viton and the faces of carbide tungsten.