Graco 168879 Back-Up Washer
Genuine Graco 168879 Back-Up Washer for regulator and fluid control assemblies. Helps prevent seal extrusion and supports long-term seal performance.
- Part Number: 168879
- Used in select Graco ProMix Easy & fluid regulator systems
- Enhances O-ring and packing durability
Graco 168879 Back-Up Washer – Overview and Compatibility
Compatible Machines
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.
- Graco ProMix Easy Systems (selected assemblies)
- Graco Fluid Controls & Fittings Regulator Models (e.g., 223621 / 208082 / 223622 series)
- Other Graco industrial coating and proportioning equipment using the same regulator configuration
Product Description
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.
Key Functions
| 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 |
Part Details
| Brand | Graco |
|---|---|
| Part Number | 168879 |
| Part Type | Back-Up Washer |
| Typical Assembly | Regulator / Valve / Fluid Control Components |
Before You Order
- Verify compatibility using your sprayer or system parts manual.
- Confirm that your equipment uses the same regulator assembly model.
- Check for part supersessions or updates if servicing older equipment.
Frequently Asked Questions
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