Genuine Graco 168879 Back-Up Washer for regulator and fluid control assemblies. Helps prevent seal extrusion and supports long-term seal performance.
This Graco 168879 Back-Up Washer is used in selected Graco industrial fluid control and regulator systems. Confirm compatibility with your exact model using the official parts manual.
The 168879 Back-Up Washer is designed to support the internal sealing components within high-pressure fluid regulator assemblies. Its function is to prevent seal extrusion under operating pressure and extend the service life of O-rings and internal packing elements. This washer is typically installed behind the primary sealing component to maintain structural alignment and ensure reliable pressure management.
| Function Role | Supports sealing components during high-pressure operation |
|---|---|
| Seal Protection | Prevents extrusion and deformation of O-rings or packing |
| Assembly Stability | Helps maintain correct internal regulator alignment |
| Common Usage | Used in Graco industrial coating systems and proportioners |
| Brand | Graco |
|---|---|
| Part Number | 168879 |
| Part Type | Back-Up Washer |
| Typical Assembly | Regulator / Valve / Fluid Control Components |
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