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The US SEAL TACO-950-665BRP* is a Standard B Design seal kit made with NI-Resist material, engineered as a replacement seal assembly for Taco circulator pumps. This kit provides the sealing components needed to restore pump integrity in hydronic heating and cooling systems. The NI-Resist construction offers corrosion resistance in wet, high-temperature circulator environments. Installation is performed by licensed plumbers or HVAC technicians during routine pump maintenance or when a seal failure causes leakage around the pump shaft. At 3 pounds, the kit ships as a compact service part for field or shop use.
This seal kit is suited for hydronic heating systems, chilled water loops, and closed-loop circulator applications where Taco Standard B Design pumps are installed. It is a common service item in residential and light commercial boiler systems, used when replacing worn or failed shaft seals during a pump rebuild rather than full pump replacement. Technicians typically stock this kit as a service part for scheduled maintenance or emergency repair calls on Taco circulator equipment.
Designed as an OEM-style replacement seal kit for Taco Standard B Design circulator pumps used in hydronic heating and cooling systems.
Seal kit replacement should be performed by a licensed plumber or HVAC technician. Before beginning work, shut off and lock out power to the circulator pump and isolate the pump from system pressure by closing isolation valves. Drain the pump cavity before disassembling the pump housing to access the shaft seal. Follow the pump manufacturer's service documentation for correct seal orientation and reassembly sequence.
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