

The Graco 185941 Plug Boss securely seals unused ports or openings, maintaining pressure integrity and preventing leaks.
The Graco 185941 Plug Boss is designed to seal unused fluid or air ports in the pump assembly, providing a secure shut‑off that prevents leaks and maintains system pressure. It protects internal components from contamination and ensures reliable performance.
| Part Number | 185941 |
|---|---|
| Component Type | Sealing Plug |
| Main Function | Port sealing and protection |
| Installation Area | Pump housing |