Blackmer System One/Chesterton Pumps are designed for tough applications.  This Heavy Duty centrifugal pump was designed around the mechanical seal for optimal seal and bearing life.  In addition to improved bearings and seals, the System One is designed with a reduced-overhang solid shaft to prevent resistance to deflection.  The result is a very durable pump that can withstand applications where other pumps fail.

Semler Industries also carries a full line of Blackmer Replacement Pump Parts