Eureka Dirt Cup - Sanitaire SC689A Commercial Upright

The removable dirt cup on a Sanitaire or Eureka commercial upright catches everything pulled up through the nozzle, and this is that cup, part 01959313N, built for machines including the SC689A.

These commercial uprights are frequently run every working day and emptied multiple times during a single shift, which puts steady wear on the cup's seating edges and the points where it locks into the housing. Once the cup cracks, warps, or stops staying fully seated, the seal against the housing breaks down. Fine dust drifts back into the room rather than staying contained, and the machine loses part of the negative pressure that pulls debris off the floor in the first place, so cleaning performance suffers even though nothing upstream in the airflow path has changed at all, which is exactly what makes the cup itself worth checking early.

• Part: 01959313N dirt cup
• Fits: Sanitaire and Eureka C2132A, C2132B, C2132B1, C2132B2, C2132B3, C2133A, SC689A, SC877D, SC877E, SC887D, SC887E, SC888G
• Function: collects debris pulled through the nozzle
• Sign of failure: visible dust around the cup, or a cup that will not stay seated

A replacement cup seats the same way the original did, restoring the airtight connection this design depends on rather than just patching the symptom. Look up the exact model designation printed on the machine's data plate and match it against the list above before ordering, since this cup is only confirmed for the models named here. While the old cup is off, wipe the sealing edges on the housing clean, since caked dust there can break the seal as surely as a crack can.