The Pentair 356795Z seal plate restores critical fluid dynamics and component alignment in commercial pool and spa pumps designed for the EQ Series platform. Measuring 11 inches by 2.5 inches and weighing approximately 8 pounds, this genuine OEM replacement provides the rigid mounting interface that secures the mechanical shaft seal against the wet-end assembly. When the factory plate cracks, warps, or experiences seal-face fatigue, water bypasses the packing and leads to rapid impeller and motor damage. Installing part 356795Z re-establishes a precise sealing datum and correct shaft centering without replacing the entire pump housing.

This replacement seal plate is engineered for broad EQ Series compatibility, directly fitting EQW300, EQWK300, EQW500, EQWK500, EQ500, EQK500, EQ750, EQK750, EQ1000, EQK1000, and EQK1500 models across the 3 HP to 15 HP operational range. Former cataloged as 356795, the current 356795Z designation shares identical casting dimensions, bolt spacing, and gasket grooves for a direct bolt-on swap. The plate serves exclusively as the structural backing for the shaft seal;

related hardware is not included. Pair this plate with part 071725S for the primary rotary face seal and part 356780Z for the static O-ring seated in the plate groove. Perform all electrical lockout procedures and depressurize the piping before removal. Because EQ Series pumps rely on exact motor-to-volute spacing, verify pump labeling and existing plate dimensions match before dispatch. Replacing the seal plate alongside concurrent wear items eliminates repeat leakage cycles and extends service intervals in high-duty commercial and hospitality installations.