Graco 116546 – Hollow‑Hex Hydraulic Plug
The Graco 116546 Plug, Hollow Hex, Hydraulic is a genuine OEM hydraulic plug designed to seal unused fluid or hydraulic ports in Graco systems. It provides leak‑proof sealing and ensures system integrity when ports are not in use.
Key Features & Purpose
- Type: Hydraulic / fluid system plug — cap‑plug design.
- Hollow‑Hex Head: Enables easy installation or removal with standard wrench or hex‑socket tools for secure sealing and maintenance.
- OEM Quality: Genuine Graco part — ensures correct fit, thread standards, and sealing integrity compared to generic plugs.
- Compact & Lightweight: Small plug (≈ 0.75″ high × 0.85″ long × 0.5″ wide) — ideal for tight or confined hydraulic/fuid system ports.
- Use Case: Seals unused hydraulic or fluid ports in pumps, fluid manifolds, or hydraulic‑powered equipment — preventing leaks, dust ingress, or fluid contamination.
Compatible Systems / Applications
- Graco hydraulic‑powered sprayers, pumps or machinery requiring port sealing in hydraulic/fluid circuits
- Hydraulic manifolds or fluid‑handling assemblies on Graco equipment where unused ports must be plugged
- Maintenance, repair or rebuild operations — when original plugs are missing, worn or corroded and need replacement
Note: Because 116546 is a hydraulic plug (not a universal part), ensure that your equipment’s port thread and size match that of the plug before installing.
When & Why Use the 116546 Plug
- To seal unused or blank hydraulic/fluid ports — avoiding leaks or contamination in the system
- During maintenance or disassembly/re‑assembly — replacing missing or damaged plugs to restore system integrity
- As a preventive measure in hydraulic systems when parts are removed or reconfigured — ensuring closed circuits where needed
Frequently Asked Questions
The 116546 plug is used to cap off or seal unused hydraulic or fluid ports — preventing leaks, dust ingress, or contamination inside the system.
Yes — 116546 is listed among Graco’s hydraulic/fitting spare parts as a hollow‑hex plug.
Anywhere in a Graco hydraulic or fluid‑system where there is a matching port requiring sealing — e.g. hydraulic manifolds, pump housings, fluid passages — provided the thread/size matches.
