660270 RESTOP RING

SKU: 4474

Restop rings are part of the triplex pump seal stack — rigid rings that sit among the packings and seals to maintain stack height, spacing, and alignment as the plunger reciprocates. Part 660270 keeps the sealing components in their designed positions so each packing sees even compression; a cracked, worn, or heat-distorted restop ring lets the stack shift, which shows up as uneven wear on new packings or recurring leaks after a reseal. Like all stack hardware, it is replaced whenever the seals are serviced. Fitment is part-number-specific: confirm 660270 against your pump's exploded diagram or data plate.