9.0200.00 BRASS PACKING

SKU: 1653

A brass packing is the primary high-pressure seal in a triplex plunger pump head — a V- or U-cup ring that surrounds each plunger and holds back the water pressure generated on every stroke. Part 9.0200.00 belongs in the seal stack where pressure is highest, and it wears from plunger friction, heat, and cavitation damage. When packings fail, water escapes past the plunger area and the washer loses pressure at the nozzle. These seals are serviced as matched sets per cylinder, so plan on replacing the full stack. Fitment is exact: confirm part number 9.0200.00 on your pump's parts diagram and verify your plunger diameter, since even a small size mismatch will not seal.