To ensure effective sealing, plummer blocks are available with a variety of special sealing options and end covers. Benefits include a facility for easy mounting and dismounting of pre-assembled shafts. Plummer block housings can be used with high-capacity spherical roller bearings or self-aligning ball bearings. They are manufactured from high-strength cast iron as standard but are also available in cast steel or spheroidal graphite cast iron. The housings have a re-lubrication facility and can be used with either oil or grease lubrication. These are manufactured from high strength cast iron and can be ﬁtted with spherical roller bearings or self-aligning ball bearings. These plummer block housings can accommodate different types of seals, varying from the simple felt seal to the more complex steel and aluminium labyrinth seal.