Armstrong Fluid Technology 818504-000K Assembly kit R-410A this is a mechanical rebuild

this is a mechanical rebuild kit containing internal wear parts like the plunger and diaphragm

Electrodes and sensors must be purchased separately if they require replacement

With a maximum rating of 1140 RPM

including a mechanical stop

Armstrong Fluid Technology 818504-000K Assembly kit R-410A this is a mechanical rebuildThe Armstrong Fluid Technology 818504 000K Seal Bearing Assembly Kit is a premium, maintenance free solution designed to restore the performance of your circulator pumps. This high efficiency SBA MF 5 Series assembly is engineered for durability, featuring a stainless steel shaft and an EPDM sintered silicon carbide seal to prevent leaks and ensure long term reliability in demanding HVACR environments. As a genuine OEM replacement, the 818504 000K