The Graco 166512 Washer Backup supports the packing stack inside the pump, helping maintain seal alignment and preventing extrusion under pressure.
This Graco 166512 Washer Backup is used in specific Graco pump assemblies. The sprayers listed below are the common models that use pump series where this washer appears in the parts breakdown.
The Graco 166512 Washer Backup is a precision-made support washer used inside the fluid section of Graco airless paint sprayers. It stabilizes the packing stack, prevents seal extrusion under high pressure, and helps maintain long-term pump reliability.
| Part Number | 166512 |
|---|---|
| Part Type | Washer Backup |
| Function | Supports packings and maintains alignment in pump assembly |
| Location | Fluid Section / Pump Assembly |
Subscribe to our newsletter to get exclusive discounts and new theme launches right in your inbox.
You may unsubscribe at any moment. For that purpose, please find our contact info in the legal notice.
