

Precision piston seat engineered for Graco 4.5 cm pump systems, ensuring tight sealing, stable pressure, and consistent spray performance.
| Equipment Series | Compatible Models | Function Context |
|---|---|---|
| Graco Ultra Max II Series | 695, 795, 1095 | Used within 4.5 cm piston pump assemblies for sealing and pressure control |
| Graco GMax Series | 3900, 5900, 7900 | Supports high-pressure sealing in heavy-duty spray systems |
| Graco LineLazer Series | 3400, 3900, 5900 | Maintains piston sealing integrity in striping applications |
| Graco Mark Series (select models) | Mark IV, Mark V | Only compatible with 4.5 cm piston configuration systems |
The Graco 184042 Seat, Piston (4.5 Cm) is a precision sealing component within airless sprayer pump systems, designed to regulate piston movement and maintain high-pressure sealing integrity during operation.
It ensures proper fluid control and prevents backflow within the pump assembly, supporting consistent spray performance in demanding professional coating applications.