SprayTech part 0551677 is a fluid section repacking kit designed to rebuild the pump on compatible Advantage and EPX series airless sprayers. This kit includes all necessary seals, packings, and O‑rings to restore proper hydraulic performance, eliminate leaks, and maintain consistent pressure. Rebuilding the fluid section with this genuine kit extends pump life and ensures reliable operation.
| Part Number | 0551677 |
|---|---|
| Part Description | Fluid Section Repacking Kit (pump seal kit) |
| Brand | SprayTech / Advantage |
| Fits | Advantage 600; SprayTech Airless Advantage EPX2355; SprayTech Airless EPX2355 |
| Condition | New |
The SprayTech 0551677 Fluid Section Repacking Kit contains all the seals, packings, and O‑rings necessary to completely rebuild the pump fluid section on Advantage 600 and EPX2355 series airless sprayers. This genuine OEM kit restores hydraulic efficiency, eliminates leaks, and ensures consistent spray pressure.
Over time, pump seals wear out from normal use, abrasive coatings, or chemical exposure. A worn fluid section leads to pressure loss, surging, leaking paint, and reduced output. Rebuilding with this kit provides a cost‑effective alternative to replacing the entire pump and brings performance back to factory specifications.
| Seal replacement | Replaces all dynamic and static seals in the fluid section. |
|---|---|
| Pressure restoration | Eliminates internal leakage to restore consistent operating pressure. |
| Leak prevention | Stops external paint leaks from the packing nut and weep hole. |
| Pressure surging / loss | Inability to maintain steady spray pressure. |
|---|---|
| Fluid leakage | Paint leaking from packing area or weep hole. |
| Reduced output | Lower flow rate despite proper motor operation. |
| Preventive maintenance | Rebuild as part of regular overhaul after extended use. |
SprayTech part 0551677 is a direct replacement repacking kit for the following models:
| Brand / Model | Application |
|---|---|
| Advantage 600 | Complete fluid section seal kit |
| SprayTech Airless Advantage EPX2355 | Complete fluid section seal kit |
| SprayTech Airless EPX2355 | Complete fluid section seal kit |
Inspect the cylinder bore and piston for scoring; replace if damaged to ensure new seals perform properly.
Valve failure can mimic seal problems; replace valves when rebuilding for full restoration.
Check for wear or damage; replace if the packing nut cannot maintain proper compression.
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