The Pacer Pumps water pump shaft seal kit 58-0714 12 includes the primary shaft seal and secondary O-ring. This shaft seal kit is suited for all polyester Pacer S Series and Pacer Pumps with EPDM. The 58-0714 12 Pacer shaft seal kit’s mechanical seal face is made from a durable carbon-ceramic, while the O-ring is made from wear-resistant EPDM. As with all Pacer pump parts, the contents of the 58-0714 12 shaft seal kit are built for superior resistance to chemicals and corrosion for use in a range of commercial and residential applications. The pump shaft seal kit is designed for easy installation onto the water pump for reduced downtime and increased efficiency.